Six years of Cassini observations shed light on Saturn's rings, magnetic shield.

New image from Planck telescope shows cold interstellar dust reaching across Milky Way.

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

CoRoT mission finds gas giant exoplanet that most closely resembles Jupiter, Saturn.

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