Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.
By observing tiny ripples in spacetime called "gravitational waves" that propagate away from colliding black holes, ...
A new study suggests that the explosive deaths of the universe's earliest stars created surprising quantities of water that ...
Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...
An international team of researchers has found dark matter dominating the halos of two supermassive black holes in galaxies ...
Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how ...