Two space station astronauts landed safely in Kazakhstan despite stiff winds and freezing temperatures at their Central Asian landing site.

A pair of primordial black holes have been spotted so far away that they likely formed relatively soon after the Big Bang, scientists announced Wednesday.

Orbital Sciences' new Cygnus space freighter and Taurus 2 rocket for space station cargo flights draw on a solid history of spaceflight experience.

NASA has unveiled a photo of Emerald Isle as it appears from space.

A new photo from NASA's WISE space telescope has revealed a host of young stars and a dust cloud that resemble a cosmic rose.