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- The Milky Way is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the...211 KB (21,088 words) - 10:49, 29 July 2024
- The International Space Station (ISS) is a large space station assembled and maintained in low Earth orbit by a collaboration of five space agencies and...377 KB (33,513 words) - 10:53, 3 August 2024
- Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine-and-a-half...115 KB (10,361 words) - 16:03, 3 August 2024
- The zodiac is a belt-shaped region of the sky that extends approximately 8° north and south (as measured in celestial latitude) of the ecliptic, the apparent...65 KB (6,484 words) - 13:49, 23 July 2024
- The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged...110 KB (10,787 words) - 07:21, 26 July 2024
- Unsolved problem in astronomy: Could life have arisen elsewhere? What are the requirements for life? Are there exoplanets like Earth? How likely is the...115 KB (13,383 words) - 00:00, 27 July 2024
- Sirius is the brightest star in the night sky. Its name is derived from the Greek word Σείριος (Latin script: Seirios), meaning lit. 'glowing' or 'scorching'...96 KB (10,120 words) - 01:27, 2 August 2024
- Mir (Russian: Мир, IPA: [ˈmʲir]; lit. 'peace' or 'world') was a space station that operated in low Earth orbit from 1986 to 2001, operated by the Soviet...124 KB (13,014 words) - 21:34, 23 July 2024
- The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no conclusive...206 KB (19,999 words) - 13:52, 30 July 2024
- The Antikythera mechanism (/ˌæntɪkɪˈθɪərə/ AN-tik-ih-THEER-ə, US also /ˌæntaɪkɪˈ-/ AN-ty-kih-) is an Ancient Greek hand-powered orrery (model of the Solar...128 KB (13,215 words) - 05:00, 31 July 2024
- Human spaceflight (also referred to as manned spaceflight or crewed spaceflight) is spaceflight with a crew or passengers aboard a spacecraft, often with...99 KB (10,517 words) - 15:43, 13 June 2024
- The Blue Marble is a photograph of Earth taken on December 7, 1972, from a distance of around 29,400 km (18,300 mi) from Earth's surface. The original...34 KB (3,491 words) - 01:14, 31 July 2024
- The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the...138 KB (13,925 words) - 00:44, 3 August 2024
- This is a list of astronauts by year of selection: people selected to train for a human spaceflight program to command, pilot, or serve as a crew member...112 KB (11,454 words) - 22:27, 26 July 2024
- Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion exclusively deals with propulsion systems...89 KB (8,001 words) - 02:50, 3 August 2024
- The Boeing X-37, also known as the Orbital Test Vehicle (OTV), is a reusable robotic spacecraft. It is boosted into space by a launch vehicle, then re-enters...82 KB (7,127 words) - 16:53, 3 August 2024
- Asteroid mining is the hypothetical extraction of materials from asteroids and other minor planets, including near-Earth objects. Notable asteroid mining...95 KB (9,405 words) - 00:21, 23 July 2024
- The Large Magellanic Cloud (LMC) is a dwarf galaxy and satellite galaxy of the Milky Way. At a distance of around 50 kiloparsecs (163,000 light-years)...33 KB (3,557 words) - 05:04, 29 July 2024
- Galileo is a global navigation satellite system (GNSS) that went live in 2016, created by the European Union through the European Space Agency (ESA), operated...108 KB (10,692 words) - 17:02, 22 July 2024
- The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy...74 KB (8,539 words) - 15:53, 2 August 2024