Aug 01, 2013 10:02 AM EDT
Astronomers Solve Mystery Behind 'Quenched' Galaxies
Galaxies are usually full of dust and gas, the raw materials that help them birth stars. Over time, though, these materials can be lost or used up, effectively snuffing out these galaxies and causing them to become "quenched." Now, astronomers have discovered why past quenched galaxies are smaller t...