Search results

Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion exclusively deals with propulsion systems...

NGC 8 is an asterism of two completely unrelated stars (spectral types K6I and G4)[citation needed] in the constellation Pegasus, discovered on 29 September...

Ralph Asher Alpher (February 3, 1921 – August 12, 2007) was an American cosmologist, who carried out pioneering work in the early 1950s on the Big Bang...

Sea Launch was a multinational—Norway, Russia, Ukraine, United States—spacecraft launch company founded in 1995 that provided orbital launch services from...

STS-103, the 96th launch of the Space Shuttle and the 27th launch of Space Shuttle Discovery, was a Hubble Space Telescope servicing mission. It launched...

STS-94 was a mission of the United States Space Shuttle Columbia, launched on 1 July 1997. STS-94 was flown by the same crew that flew STS-83, the only...

STS-50 (U.S. Microgravity Laboratory-1) was a NASA Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center...

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

A ground track or ground trace is the path on the surface of a planet directly below an aircraft's or satellite's trajectory. In the case of satellites...

Mission specialist (MS) is a term for a specific position held by astronauts who are tasked with conducting a range of scientific, medical, or engineering...

In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth. The only extraterrestrial sky...

The term cosmography has two distinct meanings: traditionally it has been the protoscience of mapping the general features of the cosmos, heaven and Earth;...

Asaph Hall III (October 15, 1829 – November 22, 1907) was an American astronomer who is best known for having discovered the two moons of Mars, Deimos...

Pioneer 1 (also known as Able 2) was an American space probe, the first under the auspices of NASA, which was launched by a Thor-Able rocket on 11 October...

Eurobird was a series of satellites owned and operated by Eutelsat. The Eurobird satellites provided broadcasting and telecommunication services primarily...

The Arcetri Observatory (Italian: Osservatorio Astrofisico di Arcetri) is an astrophysical observatory located in the hilly area of Arcetri on the outskirts...

The Astronomical Observatory of Rome (Osservatorio Astronomico di Roma in Italian) is one of twelve Astronomical Observatories in Italy. The main site...

The Dunn Solar Telescope also known as the Richard B. Dunn Solar Telescope is a unique vertical-axis solar telescope, in Sunspot, New Mexico located at...

Timeline of solar astronomy 900–929 — Muhammad ibn Jābir al-Harrānī al-Battānī (Albatenius) discovers that the direction of the Sun's eccentricity is changing...

Ernst Arnold Kohlschütter (6 July 1883 – 28 May 1969) was a German astronomer and astrophysicist from Halle. In 1908 he was awarded his Ph.D. from the...