Two asteroids swooping past Earth today may have caught the attention of the public, but events like these are not actually rare, NASA scientists say.

Space shuttle Discovery moved closer to its final mission Thursday as NASA prepares for its last launch on Nov. 1.

The Rosette Nebula, a hotbed of star formation, is photographed in a stunning new image from the Chandra X-ray Observatory.

An instrument on an upcoming mission to orbit will make daily maps of the Red Planet's atmosphere.

A photograph from the Hubble Space Telescope of a weird cosmic spiral in deep space is no trick of light - it's astrophysics in action.