Homepage for the space mission that will fly close to a comet and, for the first time ever, bring cometary material back to Earth for analysis by scientists worldwide.
Established 1899, AAS is the major professional organization in North America for astronomers, other scientists and individuals interested in astronomy.
NASA.gov brings you images, videos and interactive features from the unique perspective of America’s space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read abou...
The Cassini-Huygens Mission to the Saturnian system is a multinational cooperation between three space agencies and 17 nations. Starting in 2004, the spacecraft will explore Saturn, its mysterious rings and its many moons. The Cassini space...
The Jet Propulsion Laboratory is the lead U.S. center for robotic exploration of the solar system, and conducts major programs in space-based
Earth sciences and astronomy. JPL spacecraft have visited all of the planets from Mercury to Nep...