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Fred Espenak is a retired emeritus American astrophysicist. He worked at the Goddard Space Flight Center. He is best known for his work on eclipse predictions...

Space and survival is the idea that the long-term survival of the human species and technological civilization requires the building of a spacefaring civilization...

In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the minimum distance from the central protostar of a solar...

Armadillo Aerospace was an aerospace startup company based in Mesquite, Texas. Its initial goal was to build a crewed suborbital spacecraft capable of...

Space propaganda is a form of propaganda relating to achievements in space exploration and space science. It is used primarily to further a nation's perceived...

Before the Apollo 11 Moon landing in 1969, NASA began studies of Space Shuttle designs as early as October 1968. The early studies were denoted "Phase...

The 2015 Kerala fireball was a meteor air burst that occurred over Kerala state in India on 27 February 2015. The fireball, reportedly accompanied by a...

A magnetoplasmadynamic (MPD) thruster (MPDT) is a form of electrically powered spacecraft propulsion which uses the Lorentz force (the force on a charged...

Launch commit criteria are the criteria which must be met in order for the countdown and launch of a Space Shuttle or other launch vehicle to continue...