Astronomer Jill Tarter, who has been heading up the SETI Institute for 35 years, will be giving up the reigns of the alien hunting organization to a colleague.

A newly discovered possible exoplanet some 1,500 light years away is being shredded by the intense heat of its parent star.

New research shows that other sun-like stars in the universe can send off flares much larger than those seen on our sun.

More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus.

WASHINGTON, May 8, 2012 /PRNewswire-USNewswire/ -- NASA's Spitzer Space Telescope has detected light emanating from a "super-Earth" planet beyond our solar system for the first time.