An extraterrestrial spacecraft lurking in a satellite's orbit near Earth would be able to see city lights and pollution in our atmosphere.
NASA has developed apps to track shooting stars and iPhone games to hunt comets, but its latest app is an educational project aimed at teaching kids all about rocket launches.
NASA's Mars rover Curiosity has taken its first bite out of the giant mountain that it crossed interplanetary space to explore.
A SpaceX cargo ship rocketed toward the International Space Station on Sunday, carrying the first 3-D printer for astronauts in orbit.
The U.S. Air Force and NASA have ironed out problems that prevented scientists from obtaining a steady stream of military tracking data on meteor explosions within Earth's atmosphere.
Look out, astronauts – your companion robot on the International Space Station is now mobile!
Exoplanet hunters have just made it easier to identify alien Venuses, in the hopes that doing so will lead to the discovery of more alien Earths.
NASA has awarded the space taxi contract to Boeing and SpaceX.