MSL's Radiation Assessment Detector (RAD) is the first instrument to measure the radiation environment during a Mars cruise mission

A strange-looking distant galaxy spotted by the Hubble Space Telescope.

A Russian Soyuz spacecraft carrying a crew of three rocketed into orbit today, kicking off a two-day rendezvous with the International Space Station.

Spacefarers take note: an attack on the spacecraft of one nation is an attack on all spacecraft.

... a UFO researcher claims that an incident off the shores of Anglesey could be the best evidence yet of an infamous North Wales close encounter.

The Hubble Space Telescope got its first peek at a mysterious giant green blob in outer space and found that it's strangely alive.

Is NASA Covering Up the 100-Year Starship?