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The Soviet space program (Russian: Космическая программа СССР, romanized: Kosmicheskaya programma SSSR) was the national space program of the Union of...

The Orion Arm, also known as the Orion–Cygnus Arm, is a minor spiral arm within the Milky Way Galaxy spanning 3,500 light-years (1,100 parsecs) in width...

Map all coordinates using OpenStreetMap Download coordinates as: KML GPX (all coordinates) GPX (primary coordinates) GPX (secondary coordinates) The Baikonur...

The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the...

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...

The giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed...

A multistage rocket or step rocket is a launch vehicle that uses two or more rocket stages, each of which contains its own engines and propellant. A tandem...

In lunar calendars, a lunar month is the time between two successive syzygies of the same type: new moons or full moons. The precise definition varies...

Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red...

The theorized habitability of red dwarf systems is determined by a large number of factors. Modern evidence indicates that planets in red dwarf systems...

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop, a supernova...

The Great Attractor is a region of gravitational attraction in intergalactic space and the apparent central gravitational point of the Laniakea Supercluster...

STS-128 (ISS assembly flight 17A) was a NASA Space Shuttle mission to the International Space Station (ISS) that launched on August 28, 2009. Space Shuttle...

The Chief of the Astronaut Office is the most senior leadership position for active astronauts at the National Aeronautics and Space Administration (NASA)...

National Aerospace Technology Administration (NATA; Korean: 국가항공우주기술총국) is the official space agency of North Korea, succeeding the Korean Committee of...

The Vega program (Russian: Вега) was a series of Venus missions that also took advantage of the appearance of comet 1P/Halley in 1986. Vega 1 and Vega...

Submillimetre astronomy or submillimeter astronomy (see spelling differences) is the branch of observational astronomy that is conducted at submillimetre...

Aristarchus is a lunar impact crater that lies in the northwest part of the Moon's near side. It is considered the brightest of the large formations on...

This list of exoplanets discovered in 2020 is a list of confirmed exoplanets that were first observed in 2020. For exoplanets detected only by radial velocity...

An eccentric Jupiter is a Jovian planet that orbits its star in an eccentric orbit. Eccentric Jupiters may disqualify a planetary system from having Earth-like...

Kepler Communications Inc. is an international satellite telecommunications company based in Toronto, Ontario, Canada, with presence in the UK and the...

In rocketry, range safety or flight safety is ensured by monitoring the flight paths of missiles and launch vehicles, and enforcing strict guidelines for...

26°37′S 49°04′W / 26.61°S 49.06°W / -26.61; -49.06 The South Atlantic Anomaly (SAA) is an area where Earth's inner Van Allen radiation belt comes closest...

Mercury-Atlas 4 (MA-4) was an uncrewed test flight within NASA's Project Mercury program, launched on September 13, 1961, at 14:04:16 UTC from Cape Canaveral...

Argos is a global satellite-based system that collects, processes, and disseminates (spreads, distributes) environmental data from fixed and mobile platforms...

NGC 2423-3 is a red giant star approximately 3,040 light-years away in the constellation of Puppis. The star is part of the NGC 2423 open cluster (hence...

The Stockholm Observatory (Swedish: Stockholms observatorium, 050) is an astronomical observatory and institution in Stockholm, Sweden, founded in the...

William Frederick Fisher (born April 1, 1946) is an American physician and a former NASA astronaut. Fisher went into space in 1985 on board the Space Shuttle...

Plaskett's Star /ˈplæskɪts/, also known as HR 2422 and V640 Monocerotis, is a spectroscopic binary at a distance of around 6600 light-years. It is one...

HD 175167 b is an exoplanet orbiting HD 175167, which is a G type star within the Pavo constellation 232 light-years away from the Earth. The planet was...

16 Cygni Bb or HD 186427 b is an extrasolar planet approximately 69 light-years (21 parsecs) away in the constellation of Cygnus. The planet was discovered...

NGC 4349-127 is a probable red giant star approximately 6,100 light-years away in the constellation of Crux. It is a member of the open cluster NGC 4349...

NASA Research Park is a research facility under the auspices of NASA located in San Jose, California. It is focused on fostering collaboration among government...

The Meteosat visible and infrared imager (or MVIRI) is the scientific instrument package on board the seven Meteosat first-generation geostationary meteorological...

Sirisha Bandla (Telugu: శిరీష బండ్ల; c. 1988) is an Indian-American aeronautical engineer and space tourist. She is the Vice President of Government Affairs...

Jason Andrews is an American space and technology entrepreneur. He co-founded with his wife Marian Joh, Andrews Space in 1999, founded Spaceflight Inc...

The Sky was a magazine for amateur astronomers published between 1935 and 1941. It was the successor to a monthly bulletin called The Amateur Astronomer...

FUTBOLIN (FUll Transfer By Optimized LINe-by-line methods) is a radiative transfer model for the calculation of line-by-line atmospheric emission/transmission...

The German Space Travel Exhibition (German: Deutsche Raumfahrtausstellung) is a permanent exhibition in Morgenröthe-Rautenkranz, Germany. The exhibition...

SpaceX Starship Integrated Flight Test 2 (IFT-2) was the second integrated flight test of SpaceX Starship launch vehicle. SpaceX performed the flight test...

HD 110067 is a star with six known sub-Neptune exoplanets (b, c, d, e, f, g) with radii ranging from 1.94 R⊕ to 2.85 R⊕. The planets orbit the host star...

SROSS-C2 or Stretched Rohini Satellite Series C2 was a satellite developed by the Indian Space Research Organisation. It conducted research on Gamma Ray...

Yajnavalkya's 95-year cycle is a method of harmonizing between the lunar and solar calendars. It was proposed by the ancient Indian sage Yajnavalkya, who...