A planet slightly larger than Jupiter was recently spotted as it passed in front of a Sun-like star 500-light-years away. Called TrES-2, the new extrasolar planet is the second to be discovered using ...

Previous NASA rockets have used a variety of chemical fuels to get off the ground and move in space. The new Demonstration Rocket for Agile Cislunar Operations (DRACO) project seeks to use nuclear ...

WASHINGTON — A DARPA official said the agency canceled a space nuclear propulsion project it was jointly developing with NASA in part because the effort was overtaken by advances in more conventional ...

SpaceX’s Dragon cargo spacecraft successfully finished a test reboost of the International Space Station (ISS) on Wednesday ...