Results for "**Dwarf Planet**"
Objects Encyclopedia Entry 1775324344
** The **Kuiper Belt Object (KBO)** 2007 OR10, also known as Eris, is a dwarf planet located in the outer reaches of the **Solar System**, beyond the orbit of **Neptune**. ## Overview The **Kuiper Belt** is a region of icy bodies, asteroids, and other small celestial objects that extends from about 30 to 55 astronomical units (AU) from the **Sun**. Within this vast expanse, a multitude of **Kuiper Belt Objects (KBOs)** have been discovered, each with its unique characteristics. One such fascinating object is 2007 OR10, also known as Eris. This dwarf planet was discovered on July 26, 2007, by the Palomar Observatory in California, USA. Initially thought to be the tenth **Pluto**, it was later classified as a dwarf planet due to its size and orbital characteristics. Eris is a fascinating object that has contributed significantly to our understanding of the **Solar System**. Its discovery sparked a debate about the definition of a planet, ultimately leading to the reclassification of Pluto as a dwarf planet. This event marked a significant shift in our understanding of the **Solar System** and its many mysteries. ## History/Background The discovery of Eris is a fascinating story that began with the observations of the **Palomar Observatory**. The observatory's 1.2-meter Schmidt telescope was used to scan the skies for objects in the **Kuiper Belt**. On July 26, 2007, a team of astronomers led by Mike Brown, Chad Trujillo, and David Rabinowitz discovered a small, icy object with an unusual orbit. Initial observations suggested that the object was similar in size to Pluto, leading to speculation that it might be the tenth **Pluto**. However, further observations revealed that Eris was slightly larger than Pluto, with a diameter of approximately 2,326 kilometers (1,445 miles). This discovery sparked a heated debate about the definition of a planet, with some arguing that Eris should be considered the tenth planet. Ultimately, the **International Astronomical Union (IAU)** redefined the term "planet" in 2006, classifying Eris as a dwarf planet due to its size and orbital characteristics. ## Key Information Eris is a fascinating object with several unique characteristics. Here are some key facts about this dwarf planet: * **Diameter:** Approximately 2,326 kilometers (1,445 miles) * **Mass:** Estimated to be around 16% of the mass of **Pluto** * **Orbit:** Eris has a highly eccentric orbit, taking it as close as 37.8 AU from the **Sun** and as far as 95.6 AU from the **Sun** * **Surface:** Eris has a surface composed primarily of water ice, with possible tholins (complex organic molecules) present * **Moons:** Eris has one known moon, Dysnomia, which was discovered in 2005 ## Significance The discovery of Eris has had a significant impact on our understanding of the **Solar System**. Its discovery sparked a debate about the definition of a planet, ultimately leading to the reclassification of Pluto as a dwarf planet. This event marked a significant shift in our understanding of the **Solar System** and its many mysteries. Eris is also an important object for studying the formation and evolution of the **Solar System**. Its highly eccentric orbit suggests that it may have formed in a different region of the **Solar System**, possibly in the **Oort Cloud**. Studying Eris and other KBOs can provide valuable insights into the early history of the **Solar System** and the formation of the planets. INFOBOX: - **Name:** 2007 OR10 (Eris) - **Type:** Dwarf Planet - **Date:** July 26, 2007 - **Location:** **Kuiper Belt** - **Known For:** Discovery of a dwarf planet that sparked a debate about the definition of a planet TAGS: **Kuiper Belt Object**, **Dwarf Planet**, **Solar System**, **Pluto**, **International Astronomical Union**, **Orbital Characteristics**, **Surface Composition**, **Moons**
Space & AstronomyMissions Encyclopedia Entry 1775466905
** **Missions Encyclopedia Entry 1775466905** refers to the hypothetical space mission to explore the **Kuiper Belt**, a region of icy bodies and other small celestial objects beyond Neptune's orbit. This mission aims to study the formation and evolution of our solar system, as well as search for potential resources and habitable environments. ## Overview The **Kuiper Belt** is a vast, doughnut-shaped region of icy bodies, rocky objects, and other small celestial entities that extends from the orbit of Neptune to a distance of about 55 astronomical units (AU) from the Sun. The **Kuiper Belt** is thought to be a reservoir of small bodies that were left over from the formation of our solar system, and it is believed to contain many objects that are similar in composition to the dwarf planet Pluto. The study of the **Kuiper Belt** has been a topic of interest for astronomers and planetary scientists for decades, as it holds the key to understanding the early history of our solar system. A hypothetical space mission to explore the **Kuiper Belt** would be a complex and challenging endeavor, requiring significant technological advancements and resources. The mission would need to be designed to withstand the harsh conditions of the outer solar system, including extreme temperatures, radiation, and the effects of interstellar space. The spacecraft would also need to be equipped with advanced propulsion systems, communication equipment, and scientific instruments to study the **Kuiper Belt** and its contents. ## History/Background The concept of a **Kuiper Belt** mission has been discussed and proposed by various space agencies and organizations over the years. In the 1990s, NASA's **New Horizons** mission was launched to explore Pluto and the **Kuiper Belt**, but it only flew by the region and did not enter into orbit. Since then, there have been several proposals for a dedicated **Kuiper Belt** mission, including the **Kuiper Belt Explorer** concept study, which was conducted by NASA in the early 2000s. In recent years, there has been a renewed interest in exploring the **Kuiper Belt**, driven by advances in technology and the discovery of new objects in the region. The **New Horizons** spacecraft, which flew by Pluto in 2015, has provided valuable insights into the composition and geology of the dwarf planet, and has paved the way for future missions to explore the **Kuiper Belt**. ## Key Information A hypothetical **Kuiper Belt** mission would be designed to study the composition, geology, and atmospheres of objects in the region. The mission would also aim to search for potential resources, such as water ice and other volatile compounds, which could be used for future human missions to the outer solar system. The spacecraft would need to be equipped with advanced scientific instruments, including cameras, spectrometers, and radar systems, to study the objects in the **Kuiper Belt**. The mission would also aim to study the dynamics of the **Kuiper Belt**, including the effects of gravitational interactions between objects and the role of the Sun's gravitational influence on the region. The study of the **Kuiper Belt** would provide valuable insights into the formation and evolution of our solar system, and would help to shed light on the origins of life on Earth. ## Significance A **Kuiper Belt** mission would be a significant step forward in our understanding of the outer solar system and the formation of our solar system. The study of the **Kuiper Belt** would provide valuable insights into the early history of our solar system, and would help to shed light on the origins of life on Earth. The mission would also have significant implications for future human missions to the outer solar system, as it would provide valuable information on the resources and hazards that exist in the region. INFOBOX: - Name: **Kuiper Belt Explorer** - Type: **Deep Space Mission** - Date: **2025-2035** - Location: **Kuiper Belt** - Known For: **Exploring the formation and evolution of our solar system** TAGS: **Kuiper Belt**, **Space Exploration**, **Astronomy**, **Planetary Science**, **Solar System**, **Deep Space Mission**, **New Horizons**, **Pluto**, **Dwarf Planet**
Space & AstronomyMissions Encyclopedia Entry 1777949777
** The **Missions Encyclopedia Entry 1777949777** refers to the **New Horizons** spacecraft mission, a historic flyby of the dwarf planet **Pluto** and its moons, providing groundbreaking insights into the Kuiper Belt region. ## Overview Launched on January 19, 2006, **New Horizons** is a space exploration mission designed to study the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond the orbit of **Neptune**. The mission is a collaborative effort between NASA and the Johns Hopkins University Applied Physics Laboratory (APL). **New Horizons** is equipped with a suite of scientific instruments, including cameras, spectrometers, and a radio science experiment, to gather data on the composition, geology, and atmosphere of **Pluto** and its moons. The **New Horizons** spacecraft is powered by a radioisotope thermoelectric generator (RTG), which converts the heat generated by the decay of radioactive isotopes into electricity. This unique power source allows the spacecraft to operate for extended periods, making it an ideal choice for long-duration missions. The spacecraft's design also features a high-gain antenna, a digital computer, and a data storage system, enabling it to transmit data back to Earth. ## History/Background The concept of a **Pluto** flyby mission dates back to the 1990s, when astronomers began to realize the importance of studying the dwarf planet and its moons. In 2003, NASA selected the **New Horizons** mission proposal, led by Dr. Alan Stern, as the winner of the **New Frontiers** program. The mission was initially planned to fly by **Pluto** in 2015, but the launch date was later moved up to 2006 to take advantage of a favorable alignment of the **Pluto** system and the Earth. ## Key Information **New Horizons** flew by **Pluto** on July 14, 2015, at a distance of approximately 7,800 miles (12,500 kilometers). The spacecraft's instruments gathered an unprecedented amount of data on the dwarf planet's surface, atmosphere, and moons. Some of the key findings include: * **Pluto**'s surface is composed primarily of nitrogen ice, with evidence of recent geological activity. * The dwarf planet's atmosphere is composed mostly of nitrogen gas, with a thin layer of methane ice. * **Pluto**'s moons, including **Charon**, **Nix**, **Hydra**, and **Kerberos**, are thought to have formed through a process of gravitational capture. * The **New Horizons** spacecraft detected a possible subsurface ocean on **Pluto**, which could potentially harbor life. ## Significance The **New Horizons** mission has significantly expanded our understanding of the **Kuiper Belt** region and the dwarf planet **Pluto**. The mission has also provided valuable insights into the formation and evolution of our solar system. The discovery of a possible subsurface ocean on **Pluto** has implications for the search for life beyond Earth. **INFOBOX:** - **Name:** New Horizons - **Type:** Spacecraft mission - **Date:** January 19, 2006 (launch) - **Location:** Kuiper Belt region - **Known For:** Historic flyby of **Pluto** and its moons **TAGS:** **New Horizons**, **Pluto**, **Kuiper Belt**, **Space Exploration**, **NASA**, **Johns Hopkins University Applied Physics Laboratory**, **Astronomy**, **Astrophysics**, **Dwarf Planet**, **Spacecraft Mission**
Space & AstronomyMissions Encyclopedia Entry 1782898745
** The **Missions Encyclopedia Entry 1782898745** refers to the **New Horizons** spacecraft mission, a historic interplanetary exploration that successfully flew by Pluto and its moons, providing groundbreaking insights into the Kuiper Belt and the outer reaches of our solar system. ## Overview The **New Horizons** mission was a groundbreaking interplanetary exploration that marked a new era in space travel and astronomy. Launched on January 19, 2006, from Cape Canaveral Air Force Station in Florida, the spacecraft was designed to study the Pluto system and the Kuiper Belt, a region of icy bodies and small celestial objects beyond Neptune. Led by the **Johns Hopkins University Applied Physics Laboratory** and managed by **NASA's** **Marshall Space Flight Center**, the mission aimed to explore the uncharted territory of the outer solar system and shed light on the formation and evolution of our cosmic neighborhood. The **New Horizons** spacecraft was a marvel of modern engineering, equipped with a suite of sophisticated instruments designed to study the Pluto system in unprecedented detail. The spacecraft's primary objectives included characterizing the geology, atmosphere, and composition of Pluto, as well as exploring the moons of Pluto, including Charon, Nix, Hydra, Kerberos, and Styx. The mission also aimed to study the Kuiper Belt, a region of icy bodies and small celestial objects that holds secrets about the early formation and evolution of our solar system. ## History/Background The concept of the **New Horizons** mission dates back to the 1990s, when **Alan Stern**, a renowned planetary scientist, first proposed a mission to explore the Pluto system. Stern's idea was initially met with skepticism, but he persevered, and his vision eventually gained support from NASA and the scientific community. The mission was officially approved in 2003, and the spacecraft was built by **Astrium** (now part of **Airbus Defence and Space**). The launch of **New Horizons** on January 19, 2006, marked the beginning of a historic journey that would take the spacecraft over 3 billion miles into the outer reaches of our solar system. ## Key Information **New Horizons** flew by Pluto on July 14, 2015, at a distance of approximately 7,800 miles (12,500 kilometers), providing the first close-up images and data about the dwarf planet. The spacecraft's instruments, including the **Ralph** and **Alice** color cameras, the **LEISA** infrared spectrometer, and the **SWAP** solar wind instrument, collected a wealth of information about Pluto's surface, atmosphere, and composition. The mission revealed a diverse and complex geology, with features such as mountains, valleys, and even evidence of recent geological activity. The **New Horizons** spacecraft also discovered a system of moons around Pluto, including Charon, the largest moon in the solar system relative to its parent planet. The mission's findings have significantly expanded our understanding of the Pluto system and the Kuiper Belt. The discovery of Pluto's moons and the characterization of its surface geology have provided new insights into the formation and evolution of our solar system. The **New Horizons** mission has also demonstrated the feasibility of interplanetary travel and the potential for future missions to explore the outer reaches of our solar system. ## Significance The **New Horizons** mission has had a profound impact on our understanding of the solar system and the universe. The mission's findings have challenged our previous understanding of Pluto and the Kuiper Belt, and have opened up new avenues for research and exploration. The mission has also inspired a new generation of scientists, engineers, and explorers, and has demonstrated the power of human ingenuity and curiosity. The **New Horizons** mission has also paved the way for future interplanetary missions, including the **Pioneer** and **Voyager** spacecraft, which continue to explore the outer reaches of our solar system. The mission's success has also sparked interest in the exploration of the Kuiper Belt and the search for new celestial objects, such as dwarf planets and asteroids. INFOBOX: - **Name:** New Horizons - **Type:** Interplanetary spacecraft mission - **Date:** January 19, 2006 (launch) - **Location:** Pluto system, Kuiper Belt - **Known For:** First close-up images and data about Pluto and its moons TAGS: **New Horizons**, **Pluto**, **Kuiper Belt**, **Interplanetary Spacecraft**, **Space Exploration**, **Astronomy**, **Solar System**, **Dwarf Planet**, **Moons**, **Geology**, **Atmosphere**, **Composition**.
Space & AstronomyObjects Encyclopedia Entry 1779343143
** The **Kuiper Belt Object (KBO)**, also known as **Eris**, is a dwarf planet located in the outer reaches of the **Solar System**, discovered in 2005. ## Overview The **Kuiper Belt** is a region of icy bodies, asteroids, and other small celestial objects beyond the orbit of **Neptune**. This vast, doughnut-shaped region is thought to be a reservoir of small, icy bodies that were left over from the formation of the **Solar System**. **Eris**, a **Kuiper Belt Object (KBO)**, is one of the most notable objects in this region, and its discovery has shed light on the composition and evolution of the outer reaches of the **Solar System**. **Eris** is a fascinating object that has captured the imagination of astronomers and space enthusiasts alike. Its discovery in 2005 by a team of astronomers led by **Michael Brown** and **Chad Trujillo** sparked a debate about the definition of a planet, ultimately leading to the reclassification of **Pluto** as a dwarf planet. **Eris** is a **Kuiper Belt Object (KBO)**, a type of celestial body that is distinct from **planets** and **dwarf planets**. ## History/Background The discovery of **Eris** was a significant event in the field of astronomy, marking the first time a **Kuiper Belt Object (KBO)** had been discovered that was larger than **Pluto**. The object was initially thought to be a **planet**, but further observations revealed that it was much smaller than initially thought. **Eris** is estimated to be approximately 2,326 kilometers (1,445 miles) in diameter, making it slightly smaller than **Pluto**. The discovery of **Eris** was made possible by the use of advanced telescopes and detection techniques. The object was first detected in 2005 using the **Palomar Observatory** in California, and subsequent observations were made using the **Hubble Space Telescope** and other ground-based telescopes. The discovery of **Eris** sparked a debate about the definition of a planet, which ultimately led to the reclassification of **Pluto** as a dwarf planet. ## Key Information **Eris** is a fascinating object that has revealed much about the composition and evolution of the outer reaches of the **Solar System**. Here are some key facts about **Eris**: * **Orbital Period:** **Eris** has an orbital period of approximately 557 Earth years, which is much longer than **Pluto**. * **Surface Composition:** **Eris** is thought to have a surface composed primarily of water ice, with a possible layer of darker material on its surface. * **Size:** **Eris** is estimated to be approximately 2,326 kilometers (1,445 miles) in diameter, making it slightly smaller than **Pluto**. * **Mass:** **Eris** has a mass of approximately 16.6 times that of **Pluto**, making it one of the most massive **Kuiper Belt Objects (KBOs)**. ## Significance The discovery of **Eris** has had a significant impact on our understanding of the outer reaches of the **Solar System**. The object has revealed much about the composition and evolution of the **Kuiper Belt**, and has sparked a debate about the definition of a planet. **Eris** has also raised questions about the possibility of other **Kuiper Belt Objects (KBOs)** that may be similar in size and composition. **Eris** is a fascinating object that continues to capture the imagination of astronomers and space enthusiasts alike. Its discovery has shed light on the composition and evolution of the outer reaches of the **Solar System**, and has sparked a debate about the definition of a planet. As we continue to explore the **Kuiper Belt** and other regions of the **Solar System**, we may uncover even more secrets about the formation and evolution of our celestial neighborhood. INFOBOX: - **Name:** Eris - **Type:** Dwarf Planet - **Date:** Discovered in 2005 - **Location:** **Kuiper Belt** - **Known For:** Being one of the most massive **Kuiper Belt Objects (KBOs)** and sparking a debate about the definition of a planet. TAGS: **Kuiper Belt Object (KBO)**, **Dwarf Planet**, **Solar System**, **Pluto**, **Palomar Observatory**, **Hubble Space Telescope**, **Astronomy**, **Space Exploration**.
Space & AstronomyObjects Encyclopedia Entry 1780313225
** The **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy celestial body located in the outer reaches of the **Solar System**, providing valuable insights into the formation and evolution of our cosmic neighborhood. ## Overview The **Kuiper Belt** is a vast, doughnut-shaped region of icy bodies, rocky objects, and other small celestial entities beyond the orbit of **Neptune**. This region is thought to be a reservoir of small bodies that were left over from the formation of the **Solar System**. **2007 OR10**, a **Kuiper Belt Object (KBO)**, is one such small, icy world that has garnered significant attention from astronomers and planetary scientists. **2007 OR10** was discovered on July 17, 2007, by the **Palomar Observatory** in California, USA. Initially, it was classified as a **Kuiper Belt Object (KBO)**, but subsequent observations revealed that it is a **dwarf planet** candidate. This classification was based on its size, shape, and orbital characteristics. **2007 OR10** is estimated to be approximately 645 kilometers (400 miles) in diameter, making it one of the largest known KBOs. ## History/Background The discovery of **2007 OR10** marked a significant milestone in the study of the **Kuiper Belt** and its inhabitants. Prior to its discovery, the **Kuiper Belt** was thought to be a relatively empty region of the **Solar System**. However, the discovery of **2007 OR10** and other KBOs has revealed a complex and dynamic environment, with a diverse range of objects and orbital characteristics. The study of **2007 OR10** has also provided valuable insights into the formation and evolution of the **Solar System**. Its orbital characteristics suggest that it is a member of a population of KBOs that are thought to have formed in the early days of the **Solar System**. The study of these objects has also shed light on the processes that shaped the **Solar System**, including the effects of **gravity**, **collision**, and **orbital perturbations**. ## Key Information **2007 OR10** is a small, icy world with a highly eccentric orbit. Its orbital path takes it from a distance of approximately 45 astronomical units (AU) from the **Sun** to a distance of approximately 30 AU from the **Sun**. This extreme orbital eccentricity is thought to be the result of gravitational interactions with the **Jupiter** and other **gas giants** in the **Solar System**. **2007 OR10** has a highly reflective surface, suggesting that it is composed primarily of water ice. Its surface is also thought to be covered in a layer of darker material, possibly the result of **cosmic rays** and other forms of radiation interacting with the surface. ## Significance The study of **2007 OR10** has significant implications for our understanding of the **Solar System** and its evolution. Its discovery has revealed a complex and dynamic environment in the **Kuiper Belt**, with a diverse range of objects and orbital characteristics. The study of these objects has also shed light on the processes that shaped the **Solar System**, including the effects of **gravity**, **collision**, and **orbital perturbations**. **2007 OR10** is also an important target for future astronomical studies. Its highly reflective surface and extreme orbital eccentricity make it an ideal target for studying the **Kuiper Belt** and its inhabitants. The study of **2007 OR10** has also provided valuable insights into the formation and evolution of the **Solar System**, and its discovery has marked a significant milestone in the study of the **Kuiper Belt**. INFOBOX: - Name: 2007 OR10 - Type: Kuiper Belt Object (KBO) / Dwarf Planet Candidate - Date: July 17, 2007 (discovery) - Location: Kuiper Belt, outer reaches of the Solar System - Known For: Highly eccentric orbit and highly reflective surface TAGS: **Kuiper Belt Object (KBO)**, **Dwarf Planet**, **Solar System**, **Astronomy**, **Astrophysics**, **Space Exploration**, **Planetary Science**, **Orbital Mechanics**, **Gravity**, **Collision**, **Orbital Perturbations**
Space & AstronomyObjects Encyclopedia Entry 1777869496
** The **Kuiper Belt Object (KBO)**, also known as **Eris**, is a dwarf planet located in the outer reaches of the **Solar System**, discovered in 2005, and classified as a member of the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond Neptune's orbit. ## Overview The **Kuiper Belt** is a vast, ring-shaped region of our Solar System, extending from the orbit of Neptune to a distance of approximately 55 astronomical units (AU) from the Sun. Within this region, numerous small, icy bodies and dwarf planets reside, including the **Kuiper Belt Object (KBO)**, **Eris**. **Eris** was discovered on January 5, 2005, by a team of astronomers led by Michael E. Brown at the **Palomar Observatory** in California, USA. Initially thought to be the tenth planet in our Solar System, **Eris** was later reclassified as a dwarf planet due to its size and orbital characteristics. **Eris** is a fascinating celestial body, with a highly eccentric orbit that takes it as close as 37.8 AU from the Sun and as far as 95.6 AU from the Sun. This unique orbit results in extreme temperature fluctuations, ranging from -233°C to -173°C (-391°F to -279°F), making it one of the coldest objects in our Solar System. **Eris** has a highly reflective surface, composed primarily of frozen methane and nitrogen ices, which gives it a distinct blue color. ## History/Background The discovery of **Eris** was a significant event in the field of astronomy, as it challenged our understanding of the Solar System's structure and classification of celestial bodies. Prior to **Eris**'s discovery, the **Kuiper Belt** was thought to be a relatively empty region of our Solar System. However, the discovery of **Eris** and other KBOs revealed a complex and dynamic environment, with many small, icy bodies and dwarf planets residing in this region. ## Key Information * **Size:** **Eris** has a diameter of approximately 2,326 kilometers (1,445 miles), making it slightly larger than Pluto. * **Orbit:** **Eris** has a highly eccentric orbit, taking it as close as 37.8 AU from the Sun and as far as 95.6 AU from the Sun. * **Surface:** **Eris** has a highly reflective surface, composed primarily of frozen methane and nitrogen ices. * **Moons:** **Eris** has one known moon, **Dysnomia**, which was discovered in 2005. * **Composition:** **Eris** is thought to have a rocky core, surrounded by a mantle of frozen ices. ## Significance The discovery of **Eris** and other KBOs has significantly expanded our understanding of the Solar System's structure and evolution. **Eris** has also raised questions about the definition of a planet and the classification of celestial bodies. The discovery of **Eris** has also sparked interest in the exploration of the **Kuiper Belt**, with several spacecraft and missions planned to explore this region of our Solar System. INFOBOX: - **Name:** Eris - **Type:** Dwarf Planet - **Date:** January 5, 2005 - **Location:** Kuiper Belt - **Known For:** Discovery of a new dwarf planet and reclassification of the Solar System's structure TAGS: **Kuiper Belt**, **Dwarf Planet**, **Eris**, **KBO**, **Solar System**, **Astronomy**, **Space Exploration**, **Celestial Bodies**, **Planetary Science**
Space & AstronomyObjects Encyclopedia Entry 1778484184
** The **Kuiper Belt Object (KBO)**, also known as **Eris**, is a dwarf planet located in the outer reaches of the **Solar System**. It was discovered in 2005 and is one of the most significant objects in the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond **Neptune**. ## Overview The **Kuiper Belt Object (KBO)**, specifically **Eris**, is a fascinating celestial body that has garnered significant attention in the scientific community. Located in the outer reaches of the **Solar System**, **Eris** is a dwarf planet that is part of the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond **Neptune**. The discovery of **Eris** in 2005 sparked a debate about the definition of a planet, leading to the reclassification of **Eris** and other similar objects as dwarf planets. **Eris** is a relatively small object, with a diameter of approximately 2,326 kilometers (1,445 miles). It is composed primarily of rock and ice, with a surface that is thought to be composed of methane and nitrogen ices. **Eris** has a highly eccentric orbit, which takes it as close as 37.8 astronomical units (AU) from the **Sun** and as far as 95.6 AU from the **Sun**. One astronomical unit is the average distance between the **Earth** and the **Sun**, which is approximately 149.6 million kilometers (92.96 million miles). ## History/Background The discovery of **Eris** was announced on July 29, 2005, by a team of astronomers led by Mike Brown of the **California Institute of Technology**. The discovery was made using the **Palomar Observatory** in California, and the object was initially thought to be the tenth planet in our **Solar System**. However, further observations revealed that **Eris** was actually a dwarf planet, and its size and mass were not sufficient to be considered a full-fledged planet. The discovery of **Eris** sparked a debate about the definition of a planet, which had been a topic of discussion among astronomers for some time. The debate ultimately led to the reclassification of **Eris** and other similar objects as dwarf planets, which are defined as celestial bodies that are in orbit around the **Sun**, have sufficient mass to assume a hydrostatic equilibrium shape, and have not cleared the neighborhood around their orbits. ## Key Information **Eris** is a fascinating object that has been the subject of extensive study by astronomers. Some of the key facts about **Eris** include: * **Orbital Period**: **Eris** has an orbital period of approximately 557 Earth years. * **Surface Temperature**: The surface temperature of **Eris** is estimated to be around -233°C (-391°F). * **Atmosphere**: **Eris** has a thin atmosphere that is thought to be composed of methane and nitrogen ices. * **Moons**: **Eris** has one known moon, called **Dysnomia**. ## Significance The discovery of **Eris** has significant implications for our understanding of the **Solar System**. The existence of dwarf planets like **Eris** suggests that the **Solar System** is a complex and dynamic system, with many objects that are still waiting to be discovered. The study of **Eris** and other dwarf planets can provide valuable insights into the formation and evolution of the **Solar System**, and can help us better understand the conditions that led to the formation of our own planet. INFOBOX: - **Name**: Eris - **Type**: Dwarf Planet - **Date**: July 29, 2005 - **Location**: Kuiper Belt - **Known For**: Discovery of a dwarf planet and reclassification of the definition of a planet TAGS: **Kuiper Belt**, **Dwarf Planet**, **Solar System**, **Eris**, **Kuiper Belt Object**, **Astronomy**, **Space Exploration**, **Celestial Body**, **Orbital Period**, **Surface Temperature**, **Atmosphere**, **Moons**.
Space & AstronomyObjects Encyclopedia Entry 1781412965
** The **Kuiper Belt Object (KBO) 2000 EB173** is a small, icy celestial body located in the outer reaches of the **Solar System**, specifically within the **Kuiper Belt**, a region of icy bodies and other small celestial objects beyond the orbit of **Neptune**. ## Overview The **Kuiper Belt** is a vast, doughnut-shaped region of icy bodies, asteroids, and other small celestial objects that surrounds the **Solar System**. It is thought to be a reservoir of small, icy bodies that were left over from the formation of the **Solar System**. The **Kuiper Belt** is named after the Dutch-American astronomer **Gerald Kuiper**, who first proposed its existence in the 1950s. One of the most notable objects in the **Kuiper Belt** is the **Kuiper Belt Object (KBO) 2000 EB173**, which was discovered in 2000 by a team of astronomers led by **Brian Marsden**. **KBO 2000 EB173** is a small, icy world that is estimated to be about 100-200 kilometers in diameter. It is thought to be a dwarf planet, similar to **Pluto**, and is composed primarily of water ice mixed with darker organic material. **KBO 2000 EB173** has a highly eccentric orbit, which takes it as close as 28 astronomical units (AU) from the **Sun** and as far as 48 AU from the **Sun**. One astronomical unit is the average distance between the **Earth** and the **Sun**, which is about 149.6 million kilometers. ## History/Background The discovery of **KBO 2000 EB173** was announced in 2000 by a team of astronomers from the **Minor Planet Center**. The object was discovered using a combination of ground-based telescopes and the **Spacewatch** survey, which is a program designed to detect and track small, faint objects in the **Solar System**. The discovery of **KBO 2000 EB173** was significant because it provided further evidence for the existence of the **Kuiper Belt**, which was first proposed by **Gerald Kuiper** in the 1950s. ## Key Information **KBO 2000 EB173** is a small, icy world that is estimated to be about 100-200 kilometers in diameter. It is thought to be a dwarf planet, similar to **Pluto**, and is composed primarily of water ice mixed with darker organic material. **KBO 2000 EB173** has a highly eccentric orbit, which takes it as close as 28 astronomical units (AU) from the **Sun** and as far as 48 AU from the **Sun**. The object's orbit is also highly inclined, which means that it is tilted at an angle of about 40 degrees relative to the **Earth's** orbit around the **Sun**. **KBO 2000 EB173** has a surface temperature that is estimated to be around -233 degrees Celsius, which is much colder than the surface temperature of **Pluto**. The object's surface is also thought to be highly reflective, which suggests that it may have a surface composed of water ice mixed with darker organic material. ## Significance The discovery of **KBO 2000 EB173** is significant because it provides further evidence for the existence of the **Kuiper Belt**, which is thought to be a reservoir of small, icy bodies that were left over from the formation of the **Solar System**. The discovery of **KBO 2000 EB173** also highlights the importance of continued exploration and study of the **Solar System**, which can provide valuable insights into the formation and evolution of our cosmic neighborhood. INFOBOX: - Name: 2000 EB173 - Type: Kuiper Belt Object (KBO) - Date: Discovered in 2000 - Location: Kuiper Belt - Known For: Discovery of a small, icy world in the Kuiper Belt TAGS: **Kuiper Belt**, **Kuiper Belt Object (KBO)**, **Dwarf Planet**, **Pluto**, **Solar System**, **Astronomy**, **Space Exploration**, **Minor Planet Center**, **Spacewatch**
Space & AstronomyObjects Encyclopedia Entry 1780272906
** The **Kuiper Belt Object (KBO) 2007 OR10** is a trans-Neptunian object discovered in 2007, providing valuable insights into the formation and evolution of our solar system. ## Overview Located in the outer reaches of the solar system, the **Kuiper Belt** is a region of icy bodies, including dwarf planets, asteroids, and comets. The **Kuiper Belt Object (KBO) 2007 OR10** is one such celestial body, discovered on July 17, 2007, by astronomers using the Palomar Observatory in California. This object is a prime example of the diverse population of small, icy bodies in the Kuiper Belt. The discovery of 2007 OR10 was made possible by the use of advanced astronomical surveys and detection techniques. The object's small size and faint brightness made it difficult to detect, but its unique orbit and motion allowed astronomers to identify it as a KBO. Since its discovery, 2007 OR10 has been the subject of extensive study, providing valuable insights into the composition, size, and orbital characteristics of KBOs. ## History/Background The study of KBOs has a long history, dating back to the discovery of **Pluto** in 1930. Initially thought to be the ninth planet in our solar system, Pluto's small size and unusual orbit led to its reclassification as a dwarf planet in 2006. The discovery of 2007 OR10 was a significant milestone in the study of KBOs, as it provided a new target for astronomers to study the properties of these enigmatic objects. The Palomar Observatory, where 2007 OR10 was discovered, is a world-renowned astronomical facility located in California. The observatory has been used for numerous groundbreaking discoveries, including the detection of dark energy and the observation of distant galaxies. The discovery of 2007 OR10 was made possible by the use of advanced telescopes and detection techniques, highlighting the importance of continued astronomical research and exploration. ## Key Information **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy body with a diameter of approximately 600 kilometers (373 miles). Its surface temperature is estimated to be around -230°C (-382°F), making it one of the coldest objects in the solar system. The object's orbit is highly eccentric, taking it from 28 to 45 astronomical units (AU) from the Sun. One astronomical unit is the average distance between the Earth and the Sun. The composition of 2007 OR10 is thought to be primarily water ice, with possible contributions from other frozen volatiles such as methane and ammonia. The object's surface is likely to be composed of a mixture of ices and darker organic material, which could provide insights into the formation and evolution of the solar system. ## Significance The discovery of **Kuiper Belt Object (KBO) 2007 OR10** has significant implications for our understanding of the solar system. The study of KBOs provides valuable insights into the formation and evolution of our solar system, including the role of giant planets and the distribution of small bodies in the outer reaches of the solar system. The discovery of 2007 OR10 also highlights the importance of continued astronomical research and exploration. The study of KBOs is an active area of research, with scientists using a range of techniques to study the properties of these enigmatic objects. The discovery of 2007 OR10 is a testament to the power of astronomical research and the importance of continued exploration of the solar system. INFOBOX: - **Name:** 2007 OR10 - **Type:** Kuiper Belt Object (KBO) - **Date:** July 17, 2007 - **Location:** Kuiper Belt - **Known For:** Discovery of a new KBO, providing insights into the formation and evolution of the solar system TAGS: **Kuiper Belt Object**, **KBO**, **2007 OR10**, **Palomar Observatory**, **Astronomical Research**, **Solar System**, **Formation and Evolution**, **Kuiper Belt**, **Dwarf Planet**, **Pluto**
Space & AstronomyObjects Encyclopedia Entry 1778334967
** **Kuiper Belt Object (KBO) 2007 OR10**, also known as **Eris' cousin**, is a **dwarf planet** located in the **Kuiper Belt**, a region of icy bodies beyond Neptune's orbit. ## Overview **Kuiper Belt Object (KBO) 2007 OR10**, informally known as **Eris' cousin**, is a **dwarf planet** discovered in 2007 by astronomers at the **Palomar Observatory** in California. This **Kuiper Belt Object (KBO)** is a fascinating celestial body that has contributed significantly to our understanding of the **solar system's** outer reaches. The discovery of **2007 OR10** has shed light on the **dwarf planet** population in the **Kuiper Belt**, a region of icy bodies beyond Neptune's orbit. **2007 OR10** is a **dwarf planet** with a highly eccentric orbit, which takes it as close as 28 astronomical units (AU) from the **Sun** and as far as 95 AU from the **Sun**. One astronomical unit is the average distance between the **Earth** and the **Sun**. The **dwarf planet** has a highly inclined orbit, which means it is tilted at an angle of about 44 degrees relative to the **Earth's** orbit. This unique orbit makes **2007 OR10** an interesting target for astronomers studying the **Kuiper Belt** and its inhabitants. ## History/Background The discovery of **2007 OR10** was announced on August 18, 2007, by a team of astronomers led by **Michael Brown** from the **California Institute of Technology (Caltech)**. The discovery was made using the **Palomar Observatory's** 1.2-meter **Sloan Digital Sky Survey (SDSS)** telescope. The team used a technique called **astrometry**, which involves measuring the position and motion of celestial objects over time to determine their orbits. The discovery of **2007 OR10** was significant because it provided evidence for the existence of a large population of **dwarf planets** in the **Kuiper Belt**. Prior to this discovery, the **Kuiper Belt** was thought to be a region of small, icy bodies, but the discovery of **2007 OR10** showed that there were larger objects present in the region. ## Key Information **2007 OR10** is a **dwarf planet** with a diameter of approximately 1,100 kilometers (683 miles). Its surface is thought to be composed primarily of water ice, with a possible layer of darker material on top. The **dwarf planet** has a highly reflective surface, which suggests that it may be covered in ice. **2007 OR10** has a highly eccentric orbit, which takes it as close as 28 AU from the **Sun** and as far as 95 AU from the **Sun**. This means that the **dwarf planet** experiences extreme variations in temperature and brightness as it orbits the **Sun**. ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the **solar system's** outer reaches. The **Kuiper Belt** is thought to be a reservoir for short-period comets, which are icy bodies that originate from the **Kuiper Belt** and are perturbed into orbits that bring them closer to the **Sun**. The discovery of **2007 OR10** provides evidence for the existence of a large population of **dwarf planets** in the **Kuiper Belt**, which suggests that there may be many more objects like **2007 OR10** waiting to be discovered. INFOBOX: - **Name:** 2007 OR10 (Kuiper Belt Object) - **Type:** Dwarf planet - **Date:** August 18, 2007 - **Location:** Kuiper Belt - **Known For:** Discovery of a large population of dwarf planets in the Kuiper Belt TAGS: **Kuiper Belt**, **Dwarf Planet**, **Astronomy**, **Space Exploration**, **Solar System**, **KBO**, **Eris**, **Palomar Observatory**, **California Institute of Technology (Caltech)**
Space & AstronomyObjects Encyclopedia Entry 1781764207
** The **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy celestial body located in the outer reaches of the **Solar System**, discovered in 2007 by astronomers using the **Palomar Observatory**. ## Overview The **Kuiper Belt** is a region of our **Solar System** that contains a vast array of small, icy bodies, including dwarf planets, asteroids, and comets. These objects are remnants from the formation of the **Solar System** and are thought to be the building blocks of the planets. **2007 OR10** is one of the many KBOs discovered in recent years, and its unique characteristics make it an interesting subject of study for astronomers. **2007 OR10** was discovered on July 17, 2007, by astronomers using the **Palomar Observatory** in California, USA. The object was initially identified as a KBO due to its highly eccentric orbit, which takes it from 29 to 47 astronomical units (AU) from the **Sun**. One astronomical unit is the average distance between the **Earth** and the **Sun**. ## History/Background The discovery of **2007 OR10** was made possible by advances in telescope technology and survey techniques. The **Palomar Observatory** is a 1.2-meter telescope that uses a combination of optical and infrared detectors to study the night sky. In the early 2000s, astronomers began using the **Palomar Observatory** to conduct a survey of the **Kuiper Belt**, searching for new KBOs. The discovery of **2007 OR10** was announced on July 20, 2007, and was initially reported as a KBO with a highly eccentric orbit. Further observations revealed that the object was a small, icy body with a diameter of approximately 600 kilometers (373 miles). **2007 OR10** is one of the largest KBOs discovered to date, and its size and shape make it an interesting subject of study for astronomers. ## Key Information **2007 OR10** is a KBO with a highly eccentric orbit, which takes it from 29 to 47 astronomical units (AU) from the **Sun**. The object's orbit is highly inclined, with an inclination of 24 degrees relative to the **Ecliptic** (the plane of the **Earth**'s orbit). **2007 OR10** is thought to be a small, icy body with a diameter of approximately 600 kilometers (373 miles). **2007 OR10** has a highly reflective surface, with an albedo (reflectivity) of 0.1. This suggests that the object's surface is composed of water ice mixed with darker organic material. The object's surface temperature varies greatly depending on its distance from the **Sun**, ranging from -230°C to -170°C (-382°F to -274°F). ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the **Kuiper Belt** and the formation of the **Solar System**. **2007 OR10** is one of the largest KBOs discovered to date, and its size and shape make it an interesting subject of study for astronomers. **2007 OR10** is also thought to be a potential source of water and organic material for the **Solar System**. The object's highly reflective surface suggests that it may be composed of water ice mixed with darker organic material, which could be delivered to the **Inner Solar System** through collisions with other objects. INFOBOX: - **Name:** 2007 OR10 - **Type:** Kuiper Belt Object (KBO) - **Date:** July 17, 2007 - **Location:** Outer reaches of the **Solar System** - **Known For:** Highly eccentric orbit and highly reflective surface TAGS: **Kuiper Belt**, **Solar System**, **Astronomy**, **Space Exploration**, **Kuiper Belt Object**, **Dwarf Planet**, **Asteroid**, **Comet**, **Palomar Observatory**, **Telescope**, **Space Science**.
Space & AstronomyObjects Encyclopedia Entry 1777015685
** The **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy celestial body located in the outer reaches of the **Solar System**, discovered in 2007. ## Overview The **Kuiper Belt** is a region of our **Solar System** that contains many small, icy bodies, including dwarf planets like **Pluto**. These objects are remnants from the formation of the Solar System and are thought to be the building blocks of the planets. **2007 OR10**, officially known as **KBO 2007 OR10**, is one of the many KBOs discovered in recent years. It is a fascinating object that provides insights into the formation and evolution of our Solar System. Located about 70 astronomical units (AU) from the Sun, **2007 OR10** is a small, icy world with a diameter of approximately 700 kilometers (435 miles). It is thought to be a **dwarf planet** candidate, although its official status has not been confirmed. The object's surface is likely composed of water ice mixed with darker organic material, which gives it a reddish hue. ## History/Background **2007 OR10** was discovered on July 17, 2007, by astronomers using the **Palomar Observatory** in California. The object was initially classified as a **Kuiper Belt Object**, but its size and shape were not well understood at the time. Further observations and studies have provided more information about this enigmatic object. ## Key Information * **Size:** Approximately 700 kilometers (435 miles) in diameter * **Composition:** Water ice mixed with darker organic material * **Orbital Period:** About 555 Earth years * **Orbital Eccentricity:** 0.24 (elliptical orbit) * **Discovery Date:** July 17, 2007 * **Discovery Method:** Palomar Observatory **2007 OR10** is a fascinating object that has provided insights into the formation and evolution of our Solar System. Its size and composition suggest that it may be a **dwarf planet** candidate, although further studies are needed to confirm this status. ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the Solar System. The object's size and composition provide insights into the formation of the planets and the evolution of the Solar System. Additionally, the study of KBOs like **2007 OR10** can help us better understand the origins of life in our Solar System. INFOBOX: - **Name:** 2007 OR10 (Kuiper Belt Object) - **Type:** Kuiper Belt Object (KBO) - **Date:** July 17, 2007 (discovery) - **Location:** Outer reaches of the Solar System (70 AU from the Sun) - **Known For:** Potential dwarf planet candidate and insights into the formation and evolution of the Solar System TAGS: **Kuiper Belt Object**, **Dwarf Planet**, **Solar System**, **Astronomy**, **Space Exploration**, **Planetary Science**, **KBOs**, **2007 OR10**
Space & AstronomyObjects Encyclopedia Entry 1779288324
** The **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy celestial body located in the outer reaches of the **Solar System**, discovered in 2007. ## Overview The **Kuiper Belt** is a region of the **Solar System** that contains a large number of small, icy bodies, including dwarf planets, asteroids, and comets. These objects are remnants from the formation of the **Solar System** and are thought to be the building blocks of the planets. **2007 OR10**, also known as **Eris' cousin**, is one of the largest known **KBOs**, with a diameter of approximately 1,100 kilometers (683 miles). **2007 OR10** was discovered on July 26, 2007, by the **Palomar Observatory** using the **Palomar 1.2-meter Schmidt Telescope**. The object was initially classified as a **Kuiper Belt Object**, but subsequent observations revealed that it had a highly eccentric orbit, which is similar to that of **Eris**, a dwarf planet in the **Kuiper Belt**. This led to the suggestion that **2007 OR10** might be a dwarf planet itself. ## History/Background The discovery of **2007 OR10** was a significant event in the study of the **Kuiper Belt** and the **Solar System**. Prior to its discovery, the **Kuiper Belt** was thought to be a relatively empty region of the **Solar System**, but the discovery of **2007 OR10** and other **KBOs** has revealed a complex and dynamic system of small bodies that are thought to be the remnants of the formation of the **Solar System**. The study of **2007 OR10** has also provided insights into the formation and evolution of the **Solar System**. The object's highly eccentric orbit suggests that it may have been perturbed by the gravitational influence of the **Jupiter** and **Saturn**, which are thought to have played a key role in shaping the **Solar System**. ## Key Information * **Diameter:** approximately 1,100 kilometers (683 miles) * **Orbital period:** approximately 557 years * **Orbital eccentricity:** 0.23 * **Surface temperature:** estimated to be around -233°C (-391°F) * **Composition:** thought to be composed primarily of water ice, with possible rocky material ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the **Kuiper Belt** and the **Solar System**. The object's highly eccentric orbit suggests that the **Kuiper Belt** is a complex and dynamic system, with objects that are subject to gravitational perturbations from the outer planets. This has important implications for our understanding of the formation and evolution of the **Solar System**. The study of **2007 OR10** has also provided insights into the composition and structure of the **Kuiper Belt**. The object's surface temperature and composition suggest that it may be a remnant of the early **Solar System**, with a surface that is composed primarily of water ice. INFOBOX: - **Name:** 2007 OR10 - **Type:** Kuiper Belt Object - **Date:** July 26, 2007 - **Location:** Outer reaches of the Solar System - **Known For:** Highly eccentric orbit and possible dwarf planet status TAGS: **Kuiper Belt**, **Solar System**, **Kuiper Belt Object**, **Dwarf Planet**, **Eris**, **Palomar Observatory**, **Astronomy**, **Space Exploration**, **Planetary Science**
Space & AstronomyObjects Encyclopedia Entry 1781556725
** The **Kuiper Belt Object (KBO)**, also known as **Eris**, is a dwarf planet located in the outer reaches of the **Solar System**. ## Overview The Kuiper Belt is a region of icy bodies, rocky objects, and other small celestial entities beyond the orbit of **Neptune**. It is a vast, disk-shaped zone that stretches from about 30 to 55 astronomical units (AU) from the Sun, with the majority of objects concentrated between 40 and 47 AU. Within this region, one notable object is **Eris**, a dwarf planet that has garnered significant attention due to its size and orbital characteristics. Eris was discovered in 2005 by a team of astronomers led by **Michael Brown** at the **Palomar Observatory** in California. Initially, it was thought to be the tenth planet in our Solar System, but subsequent observations revealed that it was actually a dwarf planet, a new category of objects introduced by the **International Astronomical Union (IAU)** in 2006. Eris is named after the Greek goddess of discord and strife, reflecting its role as a significant disruptor in the field of planetary science. ## History/Background The discovery of Eris marked a significant turning point in our understanding of the outer reaches of the Solar System. Prior to its discovery, the **Kuiper Belt** was thought to be a relatively empty region, with few objects large enough to be detected. However, the discovery of Eris and other KBOs revealed a complex and dynamic system, with many objects larger than initially thought. This led to a reevaluation of the definition of a planet and the introduction of the dwarf planet category. The discovery of Eris also sparked a debate about the status of Pluto, which was previously considered the ninth planet in our Solar System. Pluto's size and orbital characteristics are similar to those of Eris, leading some to argue that it should be reclassified as a dwarf planet. In 2006, the IAU ultimately redefined the term "planet" to exclude Pluto and other objects like Eris, which are now classified as dwarf planets. ## Key Information * **Orbital Characteristics:** Eris has a highly eccentric orbit, taking about 557 Earth years to complete one rotation around the Sun. Its average distance from the Sun is about 67 AU, making it one of the most distant known objects in the Solar System. * **Size:** Eris is estimated to be about 2,326 kilometers (1,445 miles) in diameter, making it slightly larger than Pluto. * **Composition:** Eris is thought to be composed primarily of rock and ice, with a surface that is likely to be composed of frozen methane and nitrogen. * **Atmosphere:** Eris has a thin atmosphere, composed mostly of nitrogen gas. ## Significance The discovery of Eris and other KBOs has significantly expanded our understanding of the outer reaches of the Solar System. It has also led to a greater appreciation for the complexity and diversity of celestial objects in our cosmic neighborhood. The study of Eris and other KBOs continues to provide valuable insights into the formation and evolution of our Solar System, as well as the potential for life beyond Earth. INFOBOX: - **Name:** Eris - **Type:** Dwarf Planet - **Date:** Discovered on January 5, 2005 - **Location:** Kuiper Belt - **Known For:** Being the largest known KBO and a dwarf planet TAGS: **Kuiper Belt Object**, **Dwarf Planet**, **Eris**, **Kuiper Belt**, **Solar System**, **Astronomy**, **Space Exploration**, **Planetary Science**, **Astrophysics**
Space & AstronomyObjects Encyclopedia Entry 1778162824
** The **Kuiper Belt Object (KBO)**, also known as **Eris**, is a dwarf planet located in the outer reaches of the **Solar System**, beyond the orbit of **Neptune**. ## Overview The **Kuiper Belt Object (KBO)**, specifically **Eris**, is a fascinating celestial body that has garnered significant attention in the scientific community. Located in the outer reaches of the **Solar System**, **Eris** is a dwarf planet that challenges our understanding of the **Solar System**'s structure and evolution. **Eris** is a member of the **Kuiper Belt**, a region of icy bodies and other small celestial objects beyond the orbit of **Neptune**. The **Kuiper Belt** is thought to be a reservoir of small, icy bodies that were left over from the formation of the **Solar System**. **Eris** was discovered in 2005 by a team of astronomers led by **Michael Brown** at the **Palomar Observatory** in California. The discovery of **Eris** sparked a debate about the definition of a planet, as it was initially considered to be the tenth planet in our **Solar System**. However, the **International Astronomical Union (IAU)** ultimately classified **Eris** as a dwarf planet, a new category of objects created to distinguish it from the other planets in our **Solar System**. ## History/Background The study of the **Kuiper Belt** and its objects dates back to the 1990s, when astronomers began to suspect that there were many small, icy bodies beyond the orbit of **Neptune**. The discovery of **Eris** in 2005 was a significant milestone in the study of the **Kuiper Belt**, as it provided the first clear evidence of the existence of a large, icy body in this region. The discovery of **Eris** also raised questions about the definition of a planet and the classification of objects in our **Solar System**. ## Key Information **Eris** is a dwarf planet with a highly eccentric orbit that takes it as close as 37.8 astronomical units (AU) from the **Sun** and as far as 95.6 AU from the **Sun**. **Eris** has a diameter of approximately 2,326 kilometers (1,445 miles), making it slightly larger than **Pluto**. **Eris** has a highly reflective surface, indicating that it may be composed of ice and rock. The surface of **Eris** is also thought to be geologically active, with evidence of recent resurfacing and possible cryovolcanic activity. ## Significance The discovery of **Eris** has significant implications for our understanding of the **Solar System** and the formation of planets. **Eris** is thought to be a member of a new class of objects known as **dwarf planets**, which are defined as objects that are large enough to be rounded by their own gravity but have not cleared their orbits of other objects. The study of **Eris** and other **Kuiper Belt Objects** provides insights into the early formation and evolution of the **Solar System**, as well as the processes that shape the outer reaches of our **Solar System**. INFOBOX: - **Name:** Eris - **Type:** Dwarf Planet - **Date:** Discovered on January 5, 2005 - **Location:** Kuiper Belt, outer reaches of the Solar System - **Known For:** Being the first known dwarf planet in the Kuiper Belt and challenging the definition of a planet TAGS: **Dwarf Planet**, **Kuiper Belt**, **Eris**, **Solar System**, **Astronomy**, **Space Exploration**, **Planetary Science**, **Celestial Mechanics**
Space & AstronomyMissions Encyclopedia Entry 1780211824
** The **New Horizons** mission is a historic space exploration project that successfully flew by Pluto, providing the first close-up observations of the dwarf planet and its moons. ## Overview The **New Horizons** mission is a groundbreaking space exploration project launched by NASA in 2006 with the primary objective of exploring the Pluto system. The spacecraft, designed and built by the Johns Hopkins University Applied Physics Laboratory, was launched on January 19, 2006, aboard an Atlas V rocket from Cape Canaveral Air Force Station in Florida. The mission was a culmination of decades of research and planning, with the goal of expanding our understanding of the outer reaches of the solar system. **New Horizons** was designed to take advantage of a rare alignment of the planets, which allowed the spacecraft to use a gravity assist from Jupiter to gain the necessary speed to reach Pluto. The spacecraft's trajectory was carefully planned to ensure that it would fly by Pluto at a distance of approximately 7,800 miles (12,500 kilometers), providing scientists with a wealth of data about the dwarf planet's composition, geology, and atmosphere. ## History/Background The concept of exploring Pluto dates back to the 1930s, when astronomer Clyde Tombaugh discovered the dwarf planet. However, it wasn't until the 1990s that NASA began seriously considering a mission to explore Pluto. In 2003, NASA selected the **New Horizons** mission as the winner of a competition to explore the Pluto system. The mission was initially planned to launch in 2004, but delays and budget constraints pushed the launch date back to 2006. ## Key Information **New Horizons** was equipped with a suite of advanced scientific instruments, including a high-resolution camera, a spectrometer, and a radio science experiment. The spacecraft's flyby of Pluto on July 14, 2015, provided scientists with a wealth of data about the dwarf planet's composition, geology, and atmosphere. The mission revealed a diverse range of features, including mountains, valleys, and even evidence of recent geological activity. Some of the key findings from the **New Horizons** mission include: * **Pluto's surface**: The mission revealed a surface composed of nitrogen ice mixed with darker organic material, with features such as mountains, valleys, and even evidence of recent geological activity. * **Moons**: **New Horizons** discovered five moons orbiting Pluto, including Charon, Nix, Hydra, Kerberos, and Styx. * **Atmosphere**: The mission detected a thin atmosphere around Pluto, composed mostly of nitrogen gas. * **Composition**: Scientists found evidence of water ice and methane on Pluto's surface, suggesting that the dwarf planet may have a subsurface ocean. ## Significance The **New Horizons** mission marked a major milestone in space exploration, providing the first close-up observations of Pluto and its moons. The mission's findings have significantly expanded our understanding of the outer reaches of the solar system, revealing a complex and diverse range of features on Pluto's surface. The mission's success has also paved the way for future exploration of the Kuiper Belt, a region of icy bodies and small celestial objects beyond Neptune's orbit. INFOBOX: - **Name:** New Horizons - **Type:** Spacecraft - **Date:** January 19, 2006 (launch) - **Location:** Pluto system - **Known For:** First close-up observations of Pluto and its moons TAGS: **Space Exploration**, **Pluto**, **Kuiper Belt**, **Dwarf Planet**, **Spacecraft**, **NASA**, **Jupiter**, **Gravity Assist**, **Astronomy**, **Astrophysics**
Space & AstronomyObjects Encyclopedia Entry 1783047665
** The **Kuiper Belt Object (KBO) 2007 OR10**, also known as **Eris' cousin**, is a dwarf planet located in the outer reaches of the **Solar System**. ## Overview Deep within the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond the orbit of **Neptune**, lies a fascinating world known as **2007 OR10**. This **Kuiper Belt Object (KBO)**, discovered in 2007 by astronomers at the **Palomar Observatory**, has garnered significant attention due to its unique characteristics and intriguing similarities to **Eris**, a dwarf planet in the same region. **2007 OR10** is a prime example of the vast and mysterious expanse of our **Solar System**, highlighting the importance of continued exploration and research into the outer reaches of our cosmic neighborhood. ## History/Background The discovery of **2007 OR10** was announced on August 18, 2007, by a team of astronomers led by **Michael E. Brown**, a renowned expert in the field of **Kuiper Belt Objects**. Initially, the object was thought to be a **trans-Neptunian object (TNO)**, but subsequent observations revealed its size and orbital characteristics to be more consistent with those of a dwarf planet. **2007 OR10** is estimated to be approximately 1,100 kilometers (680 miles) in diameter, making it one of the largest known **KBOs**. ## Key Information **2007 OR10** is a fascinating world with several notable features. Its surface is thought to be composed primarily of water ice, with possible presence of darker organic material. The object's highly eccentric orbit takes it from a distance of about 45 astronomical units (AU) from the **Sun** to a perihelion of approximately 29 AU. This unusual orbit suggests that **2007 OR10** may have been perturbed by the gravitational influence of **Neptune**, potentially leading to its current configuration. ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the **Solar System**. Its similarities to **Eris** and other **KBOs** highlight the diversity of objects in the outer reaches of our cosmic neighborhood. **2007 OR10** also serves as a reminder of the vastness and complexity of the **Kuiper Belt**, an area that continues to be the subject of ongoing research and exploration. As scientists continue to study this enigmatic world, we may uncover new insights into the formation and evolution of our **Solar System**. INFOBOX: - Name: 2007 OR10 - Type: Kuiper Belt Object (KBO) - Date: August 18, 2007 (discovery) - Location: Kuiper Belt - Known For: Similarities to Eris and other KBOs TAGS: **Kuiper Belt Object**, **Dwarf Planet**, **Solar System**, **Kuiper Belt**, **Eris**, **Trans-Neptunian Object (TNO)**, **Water Ice**, **Organic Material**, **Astronomical Unit (AU)**, **Neptune**
Space & AstronomyObjects Encyclopedia Entry 1783283646
** A rare, exotic **Asteroid** discovered in the outer reaches of the **Solar System**, known for its unique **Cometary** properties and potential for further study. ## Overview **Objects Encyclopedia Entry 1783283646**, also referred to as **OEE 1783283646**, is a fascinating celestial body that has garnered significant attention from astronomers and space enthusiasts alike. Located in the **Kuiper Belt**, a region of icy bodies and small celestial objects beyond the **Orbit** of **Neptune**, this **Asteroid** presents a rare opportunity for scientists to study the formation and evolution of our **Solar System**. Measuring approximately 150 kilometers in diameter, OEE 1783283646 is a relatively small object compared to other **Asteroids** in the **Solar System**. However, its unique composition and **Orbital** characteristics make it an intriguing subject for further research. The object's surface is thought to be composed primarily of water ice, with possible **Organic** compounds and darker organic material present in smaller quantities. ## History/Background The discovery of OEE 1783283646 dates back to 2015, when a team of astronomers using the **Hubble Space Telescope** detected a faint, icy object in the Kuiper Belt. Initial observations suggested that the object was a **Comet**, but further analysis revealed that it was, in fact, an **Asteroid** with **Cometary** properties. This finding sparked a flurry of interest among scientists, who recognized the potential for OEE 1783283646 to provide valuable insights into the early formation and evolution of our **Solar System**. ## Key Information OEE 1783283646 is classified as a **Dwarf Planet** due to its size and **Orbital** characteristics. Its highly eccentric **Orbit** takes it from a distance of approximately 40 astronomical units (AU) from the **Sun** to a perihelion of around 20 AU. This unusual **Orbit** is thought to be the result of gravitational interactions with other objects in the Kuiper Belt. One of the most significant features of OEE 1783283646 is its **Cometary** activity. Scientists have observed the object's surface to be ejecting **Gas** and **Dust**, indicating the presence of **Volcanic** activity or other processes that release **Cometary** material. This phenomenon is rare among **Asteroids**, making OEE 1783283646 a unique target for further study. ## Significance The discovery of OEE 1783283646 has significant implications for our understanding of the **Solar System**. By studying this **Asteroid**, scientists can gain insights into the early formation and evolution of our **Solar System**, including the role of **Cometary** material in shaping the **Orbits** of planets and other objects. The study of OEE 1783283646 also has practical applications, such as the potential for **Asteroid** mining and the development of new technologies for **Space Exploration**. As scientists continue to explore and analyze this fascinating object, we may uncover new secrets about the **Cosmos** and our place within it. INFOBOX: - Name: **Objects Encyclopedia Entry 1783283646** (OEE 1783283646) - Type: **Asteroid** (Dwarf Planet) - Date: 2015 (discovery) - Location: Kuiper Belt - Known For: Unique **Cometary** properties and potential for further study TAGS: **Asteroid**, **Comet**, **Dwarf Planet**, **Kuiper Belt**, **Solar System**, **Space Exploration**, **Astronomy**, **Astrophysics**
Space & AstronomyObjects Encyclopedia Entry 1783211446
** The **Kuiper Belt Object (KBO) 2007 OR10**, also known as **Eris' cousin**, is a large, icy celestial body located in the outer reaches of the **Solar System**. ## Overview The **Kuiper Belt** is a region of the **Solar System** that contains a vast array of small, icy bodies and other celestial objects. These objects are remnants from the formation of the **Solar System** and are thought to be the building blocks of the planets. **2007 OR10**, also known as **Eris' cousin**, is a notable member of this region, with a diameter of approximately 1,100 kilometers (683 miles). This object is a **Kuiper Belt Object (KBO)**, a category of celestial bodies that are found in the outer reaches of the **Solar System**. **2007 OR10** was discovered on July 26, 2007, by astronomers using the **Palomar Observatory** in California. The object was initially thought to be a **dwarf planet**, but its size and mass were later determined to be smaller than those of **Pluto**. Despite this, **2007 OR10** is still a significant object in the **Kuiper Belt**, providing valuable insights into the formation and evolution of the **Solar System**. ## History/Background The discovery of **2007 OR10** marked a significant milestone in the study of the **Kuiper Belt**. Prior to its discovery, the **Kuiper Belt** was thought to be a relatively empty region of the **Solar System**. However, the discovery of **2007 OR10** and other similar objects has revealed a complex and dynamic region that is home to a wide range of celestial bodies. The **Kuiper Belt** is thought to be a remnant of the **Solar Nebula**, a cloud of gas and dust that formed the **Solar System**. Over time, the **Solar Nebula** collapsed under its own gravity, with the formation of the **Sun** and the **planets**. The remaining material in the **Solar Nebula** was ejected into the outer reaches of the **Solar System**, where it formed the **Kuiper Belt**. ## Key Information **2007 OR10** is a **Kuiper Belt Object (KBO)** with a diameter of approximately 1,100 kilometers (683 miles). Its mass is estimated to be around 1.6 x 10^22 kilograms, which is significantly smaller than that of **Pluto**. The object's surface is thought to be composed primarily of water ice, with a possible layer of darker material on top. **2007 OR10** has a highly eccentric orbit, which takes it from a distance of 45 astronomical units (AU) from the **Sun** to a distance of 29 AU from the **Sun**. One astronomical unit is the average distance between the **Earth** and the **Sun**. The object's orbit is also tilted at an angle of 20 degrees relative to the **Ecliptic**, which is the plane of the **Solar System**. ## Significance The discovery of **2007 OR10** has significant implications for our understanding of the **Solar System**. The object's size and mass are smaller than those of **Pluto**, which has led to a reevaluation of the definition of a **dwarf planet**. The discovery of **2007 OR10** also highlights the complexity and diversity of the **Kuiper Belt**, which is thought to be a remnant of the **Solar Nebula**. The study of **2007 OR10** and other **Kuiper Belt Objects (KBOs)** has also provided valuable insights into the formation and evolution of the **Solar System**. The objects in the **Kuiper Belt** are thought to be the building blocks of the planets, and their study can provide clues about the early history of the **Solar System**. INFOBOX: - **Name:** 2007 OR10 - **Type:** Kuiper Belt Object (KBO) - **Date:** July 26, 2007 - **Location:** Outer reaches of the Solar System - **Known For:** Discovery of a large, icy KBO in the Kuiper Belt TAGS: **Kuiper Belt**, **Kuiper Belt Object (KBO)**, **Solar System**, **Astronomy**, **Astrophysics**, **Dwarf Planet**, **Pluto**, **Solar Nebula**, **Ecliptic**, **Orbit**, **Water Ice**, **Kuiper Belt Objects (KBOs)**.