Results for “JAXA”
Akatsuki Spacecraft
Akatsuki (also known as the Venus Climate Orbiter) is a Japanese space probe launched in 2010 to study the atmospheric dynamics and climate of Venus, ultimately achieving orbit after a dramatic recovery from a failed initial insertion.
Space & AstronomyBepiColombo
** BepiColombo is a joint ESA‑JAXA mission comprising two spacecraft that will orbit Mercury to deliver the most detailed investigation yet of the innermost planet’s magnetic field, interior, and surface. **CONTENT:** ## Overview BepiColombo is a collaborative interplanetary venture between the **European Space Agency (ESA)** and the **Japan Aerospace Exploration Agency (JAXA)**, designed to place two sophisticated probes into orbit around **Mercury**, the Solar System’s closest planet to the Sun. The mission carries the **Mercury Planetary Orbiter (MPO)**, built by ESA, and the **Mercury Magnetospheric Orbiter (MMO)**—nicknamed **Mio**—developed by JAXA. Together they will conduct a comprehensive suite of measurements that address long‑standing questions about Mercury’s **magnetic field**, **magnetosphere**, **internal structure**, and **surface composition**. The spacecraft were launched together on an **Ariane 5** launch vehicle from the Guiana Space Centre on **20 October 2018**. After a complex cruise phase involving a **gravity‑assist flyby of Earth**, **two Venus flybys**, and **six Mercury flybys**, the pair will perform a Mercury orbit insertion (MOI) in **November 2026**. Once in orbit, MPO will settle into a low‑altitude, near‑circular trajectory to map the planet’s geology, while Mio will adopt a highly elliptical orbit optimized for studying the planet’s magnetosphere and solar‑wind interaction. The mission’s scientific payload includes high‑resolution cameras, laser altimeters, magnetometers, spectrometers, and radio science experiments. By combining data from both spacecraft, scientists aim to resolve Mercury’s anomalously large iron core, the origin of its weak but globally present magnetic field, and the processes that shape its extreme surface environment. ## History/Background The concept of a dedicated Mercury mission dates back to the 1990s, when both ESA and JAXA independently explored the technical challenges of reaching the Sun‑swept planet. In 2007, ESA’s **“Mercury Planetary Orbiter”** study and JAXA’s **“Mio”** concept were merged under the **BepiColombo** name—honoring the 16th‑century Italian astronomer **Bepi Colombo**, who first observed Mercury’s transit across the Sun. A formal **ESA–JAXA cooperation agreement** was signed in 2010, establishing shared responsibilities: ESA would provide the MPO, the launch vehicle, and overall mission management, while JAXA would supply Mio, the cruise‑phase propulsion module, and a portion of the scientific instruments. The mission was approved by ESA’s **Science Programme Committee** in 2012 and by JAXA’s advisory board in 2013. Key milestones included the **selection of the Ariane 5 ECA** as the launch system (2014), the **completion of spacecraft integration** at the European Spaceport in Kourou (2017), and the **final pre‑launch reviews** in early 2018. The launch on 20 October 2018 marked the beginning of a **seven‑year interplanetary cruise**, during which the spacecraft performed a series of carefully timed gravity assists to shed enough velocity to be captured by Mercury’s deep gravity well. ## Key Information - **Mission name:** BepiColombo (Mercury Planetary Orbiter + Mercury Magnetospheric Orbiter) - **Launch vehicle:** Ariane 5 ECA (VA‑247) - **Launch date:** 20 October 2018 (UTC) - **Orbit insertion:** Planned for November 2026 (Mercury orbit) - **Spacecraft mass:** MPO ≈ 1 200 kg; Mio ≈ 800 kg (including cruise module) - **Cost:** Approximately **US $2 billion** (ESA + JAXA combined) as of 2017 estimates - **Primary scientific goals:** 1. Determine Mercury’s **internal structure** and core size via radio‑science and laser altimetry. 2. Map the **global magnetic field** and characterize the **magnetosphere** with high‑precision magnetometers. 3. Study surface composition, exosphere, and space‑weathering processes using imaging spectrometers and X‑ray/gamma‑ray detectors. - **Key instruments:** **MPO** – BepiColombo Laser Altimeter (BELA), Mercury Imaging X‑ray Spectrometer (MIXS), Mercury Radiometer and Thermal Imaging Spectrometer (MERTIS); **Mio** – Magnetometer (Mio-MAG), Plasma Wave Analyzer (PWA), Solar Wind Analyzer (SWA). ## Significance BepiColombo will deliver the most detailed portrait of Mercury ever obtained, filling a critical gap in our understanding of terrestrial planet formation. By precisely measuring the planet’s **core‑to‑mantle ratio**, the mission will test hypotheses about how Mercury acquired its oversized iron core—whether through giant impacts, solar nebula processes, or early stripping of a silicate mantle. The dual‑spacecraft architecture provides a unique **synergy**: while MPO conducts high‑resolution geological mapping, Mio continuously monitors the planet’s magnetospheric dynamics, offering unprecedented insight into how a weak intrinsic magnetic field interacts with the solar wind at extreme heliocentric distances. This knowledge is directly relevant to space‑weather modeling and to the design of future missions to the inner Solar System, including potential human exploration of Mercury’s polar ice deposits. Beyond pure science, BepiColombo exemplifies **international cooperation** in deep‑space exploration, demonstrating how ESA and JAXA can pool expertise, share risk, and achieve objectives that would be prohibitive for a single agency. The mission’s success will reinforce the collaborative model for upcoming endeavors such as the **JUICE** mission to the Jovian system and the **Artemis** lunar program, cementing a legacy of shared discovery. **INFOBOX:** - Name: BepiColombo (Mercury Planetary Orbiter + Mercury Magnetospheric Orbiter) - Type: Interplanetary scientific mission / dual‑orbiter - Date: Launched 20 October 2018; Mercury orbit insertion November 2026 (planned) - Location: Mercury (planetary orbit) - Known For: First joint ESA‑JAXA mission to Mercury; dual‑spacecraft study of Mercury’s interior, magnetic field, and surface **TAGS:** Mercury, ESA, JAXA, interplanetary mission, planetary science, magnetosphere, space exploration, BepiColombo
MathematicsSolar Sails
Solar sails are a propulsion method for spacecraft that harness sunlight's radiation pressure to generate thrust, enabling long-duration missions without fuel.
Space & AstronomyInternational Space Station
** The International Space Station (ISS) is a permanently inhabited orbital laboratory in low‑Earth orbit, jointly operated by NASA, Roscosmos, ESA, JAXA, and CSA, serving as the world’s premier platform for microgravity research and international cooperation in space. **CONTENT:** ## Overview The International Space‑Station (ISS) is a modular space habitat orbiting Earth at an altitude of roughly 400 km (250 mi) in low‑Earth orbit. It functions as a continuously crewed research laboratory where scientists conduct experiments in physics, biology, Earth science, and technology that would be impossible under Earth’s gravity. The station’s **microgravity environment**, combined with exposure to the harsh space radiation and vacuum, provides a unique testbed for studying fundamental processes and for validating hardware destined for future deep‑space missions. The ISS is the product of the **International Space Station program**, a partnership among five space agencies: the United States’ NASA, Russia’s Roscosmos, the European Space Agency (ESA), Japan’s JAXA, and Canada’s CSA. Each agency contributes modules, launch services, crew rotations, and scientific payloads, creating a truly multinational enterprise. The station’s sprawling structure—over 100 m in length, with a pressurized volume of about 916 m³—makes it the largest human‑made object ever placed in orbit. Since 2 November 2000, it has hosted an unbroken human presence, surpassing any previous space‑flight record. ## History/Background The concept of a permanent orbital outpost dates back to the 1970s, when NASA’s **Space Station Freedom** and the Soviet **Mir** program laid the groundwork for international collaboration. In 1993, the United States, Russia, Europe, Japan, and Canada signed the **Intergovernmental Agreement (IGA)**, formally establishing the ISS program. The first module, Russia’s **Zarya** (Functional Cargo Block), launched on 20 November 1998, providing power, propulsion, and initial living space. Two weeks later, NASA’s **Unity** (Node 1) connected, creating the first U.S. contribution. Key milestones followed: the launch of the U.S. **Destiny** laboratory (2001), Europe’s **Columbus** module (2008), Japan’s **Kibo** (2008–2009), and Canada’s **Canadarm2** (2001). The station’s assembly was completed in 2011 with the addition of the **Tranquility** node and the **Cupola** observation module. Over the past two decades, more than 40 crewed missions have visited, rotating a multinational crew of six to seven astronauts and cosmonauts every six months. ## Key Information - **Orbit:** Low Earth orbit, ~51.6° inclination, 92‑minute orbital period. - **Mass:** ~420 t (including modules, trusses, solar arrays, and attached payloads). - **Power:** ~120 kW generated by eight solar arrays spanning 73 m. - **Crew Capacity:** Typically six members, drawn from the partner agencies. - **Research Output:** Over 3,000 scientific investigations, ranging from protein crystal growth to fluid dynamics and Earth observation. - **Milestones:** Longest continuous human presence in space (over 23 years), first commercial cargo resupply (SpaceX Dragon, 2012), first private astronaut visits (SpaceX Crew‑Dragon, 2021). - **Future Plans:** Scheduled to operate until at least 2030, with discussions on extending to 2035 and transitioning to commercial low‑Earth‑orbit platforms. ## Significance The ISS stands as a **symbol of peaceful international cooperation**, demonstrating that nations with diverse political histories can collaborate on complex, high‑risk engineering projects. Its scientific contributions have advanced our understanding of human physiology in microgravity, informing medical research on bone loss, muscle atrophy, and immune function—issues relevant both to spaceflight and aging populations on Earth. Technologically, the station has validated life‑support systems, autonomous docking procedures, and in‑orbit manufacturing techniques that will underpin future lunar gateways and Mars missions. Beyond science, the ISS serves as a powerful outreach platform. Live streams of Earth’s curvature, educational experiments conducted by schoolchildren, and astronaut social media engagements inspire a new generation of STEM enthusiasts worldwide. Economically, the station has spurred a burgeoning commercial market for cargo and crew transport, paving the way for private‑sector participation in low‑Earth‑orbit activities. **INFOBOX:** - Name: International Space Station - Type: Orbital research laboratory / human spaceflight habitat - Date: First module launched 20 November 1998; continuous crewed presence since 2 November 2000 - Location: Low Earth orbit, ~400 km altitude, 51.6° inclination - Known For: Longest uninterrupted human presence in space and the first fully international space station **TAGS:** space station, microgravity research, international cooperation, NASA, Roscosmos, ESA, JAXA, CSA