A tiny Canadian satellite is gearing up for a mission to hunt wayward space rocks that may pose a threat to Earth.

Science editor Alan Boyle's Weblog: Do rocket planes and men's fashions mix? The Rocket Racing League and DKNY, which have just struck a sponsorship deal, certainly hope so.

Mission controllers extended the Phoenix Mars Lander's schedule to keep it awake during the Martian night so the lander could coordinate with observations made by NASA's Mars Reconnaissance Orbiter as it flew over Phoenix.

An orbiting X-ray observatory has discovered an exploding star in the Milky Way which somehow escaped notice by the usual crowd of star gazers.

As humans look farther into the universe and discover more and more planets beyond the sun, many wonder how typical our own solar system is. Often astronomers in the planet-hunting business say discoveries of Earth-like worlds are just around the corner. But a new study indicates our setup may be rare indeed.