Space

Astronomers discover 'impossible' star

Video: Hubble, supersonic jets & newly formed stars

Russia rolls back space aspirations

Team suggests capturing asteroid in Earth orbit

Russia identifies cause of space freighter failure

Miniature nuclear reactor designed for use on other planets

NASA: International Space Station could be evacuated

DARPA releases video of downed hypersonic plane

Martian astronauts will need green thumbs, says NASA