A 10-year-old Canadian girl became the youngest person ever to discover an exploding star, or supernova.
This week will see a lesser known meteor shower, the Quadrantid, dazzle the night sky on Jan. 3 and 4. It's the first of nine significant meteor showers in 2011. Here’s a list of all the events and what to watch for each time.
New calculations indicate that Pluto might be the largest object in the outer solar system. Does it now deserve to be called a planet again?
Gliese 581g, a newly discovered, first-of-its-kind planet thought to exist in its star's habitable zone, might just be 'noise,' astronomers say.
Neptune has come almost full circle since it was first discovered in 1846, and on Aug. 20, it will be in a straight line with the sun and the Earth.
Researchers will be gathering data during the Perseid meteor shower. August 2010 is part of a renaissance for meteor science in the US after nearly two decades of neglect.
Meteor shower August 2010 peak comes early Friday. Emanating from the constellation Perseid, the meteor shower could yield sightings in some locations of up to 75 meteors an hour.