Astronomers are determined to protect human beings from inanimate outer space invaders
August 2010 | By Robert Irion
Dust captured by a spacecraft from a comet's tail holds clues to the origin of the solar system
December 2009 | By Robert Irion
The first mission to collect space matter from beyond the moon offers insights into the solar system's creation
December 01, 2006 | By Eric Jaffe
While Comet Shoemaker-Levy 9 is history, space scientists are just beginning to piece together the details of its pyrotechnic encounter with Jupiter last July
January 1995 | By John P. Wiley jr.