Scientists on the trail of comets in deep space "reluctantly" announced Friday an end to NASA's Deep Impact mission after nearly a decade that included celestial fly-bys and hundreds of thousands of ...

NASA's Deep Impact spacecraft is running on fumes after chasing down two comets in the last five years, but the probe's cosmic work may not be done yet. Deep Impact cruised to within 435 miles (700 ...

PASADENA, Calif. – They weren’t a red, white, and blue spectacle, but the cosmic fireworks NASA created by blasting a hole in a comet were something for scientists to cheer about this Fourth of July ...

PASADENA, Calif. -- A NASA spacecraft was speedily closing in on its target Friday, a comet scientists hope to smash open this weekend, producing celestial fireworks for the Independence Day weekend.

Chicago Tribune The climax of the Deep Impact mission, tracked by the probe's mother ship as well as the Hubble and other telescopes, could provide the most riveting holiday gift from NASA since ...