November 06, 2009 In a Galaxy Far, Far Away... Astronomers have just published the discovery of the farthest known object in the cosmos: a star that exploded when the universe was only 630 million years old -- only 4.6% of its current age.  Read More...

October 30, 2009 Dark Matter in a Galaxy Stars, the most familiar objects in the night sky, make up only a tiny percentage of the total amount of matter in the universe -- about 2%.   Read More...

October 23, 2009 The Explosive Disintegration of a Young Stellar System in Orion The Orion Nebula is one of the most beautiful sights of the winter night sky, its gas and dust glowing from the intense ultraviolet radiation of a cluster of massive young stars.  Read More...