Seven astronauts aboard the Space Shuttle Challenger died 40 years ago today in a disaster watched by millions ...

Scientists analyzed more than 100 million image cutouts from the Hubble Space Telescope archives, finding hundreds of ...

Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from ...

The International Space Station, where astronauts have lived and worked for 25 years, is regularly visible to Earth. Here's ...