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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...

A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially...

A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global...

Soyuz (Russian: Союз, IPA: [sɐˈjus], lit. 'Union') is a series of spacecraft which has been in service since the 1960s, having made more than 140 flights...

Sagittarius A*, abbreviated Sgr A* (/ˈsædʒ ˈeɪ stɑːr/ SADGE-AY-star), is the supermassive black hole at the Galactic Center of the Milky Way. Viewed from...

Asteroid mining is the hypothetical extraction of materials from asteroids and other minor planets, including near-Earth objects. Notable asteroid mining...

A gravity assist, gravity assist maneuver, swing-by, or generally a gravitational slingshot in orbital mechanics, is a type of spaceflight flyby which...

A pole star is a visible star that is approximately aligned with the axis of rotation of an astronomical body; that is, a star whose apparent position...

This is a list of stars arranged by their absolute magnitude – their intrinsic stellar luminosity. This cannot be observed directly, so instead must be...

Zvezda (Russian: Звезда, meaning "star"), Salyut DOS-8, also known as the Zvezda Service Module, is a module of the International Space Station (ISS)....

Fomalhaut (UK: /ˈfɒməloʊt/, US: /ˈfoʊməlhɔːt/) is the brightest star in the southern constellation of Piscis Austrinus, the Southern Fish, and one of the...

Scaled Composites (often called simply Scaled) is an American aerospace company founded by Burt Rutan and currently owned by Northrop Grumman. It is located...

61 Virginis (abbreviated 61 Vir) is the Flamsteed designation of a G-type main-sequence star (G7V) slightly less massive than the Sun (which has a hotter...

Progress MS-13 (Russian: Прогресс МC-13), Russian production No. 443, identified by NASA as Progress 74P, was a Progress spaceflight operated by Roscosmos...

The Rockwell X-30 was an advanced technology demonstrator project for the National Aero-Space Plane (NASP), part of a United States project to create a...

Yusaku Maezawa (前澤 友作, Maezawa Yūsaku, born 22 November 1975) is a Japanese billionaire entrepreneur and art collector. He founded Start Today in 1998...

Interstellar communication is the transmission of signals between planetary systems. Sending interstellar messages is potentially much easier than interstellar...

The South Pole Telescope (SPT) is a 10-metre (390 in) diameter telescope located at the Amundsen–Scott South Pole Station, Antarctica. The telescope is...

Acrux is the brightest star in the southern constellation of Crux. It has the Bayer designation α Crucis, which is Latinised to Alpha Crucis and abbreviated...

Lacrosse or Onyx was a series of terrestrial radar imaging reconnaissance satellites operated by the United States National Reconnaissance Office (NRO)...