A proposed mission seeks to retrieve Vanguard-1 and display it as an ancient relic of the space age.

The final piece of an advanced series of weather satellites officially began operating Tuesday to help provide better ...

An emotional rescue for America came via the first U.S. artificial satellite. Explorer 1 was boosted into space by the Army ...

The European Space Agency’s new probe, Biomass, will spend five years orbiting the planet and gathering radar imagery of ...

“As soon as you start having system glitches — and in the satellite world, system glitches are the name of the game — they're ...