May 22, 2012 The Older We Get, The Less We Know (Cosmologically) The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations of matter that grew over time, like ripples in a pond, as the universe expanded.   Read More...

May 07, 2012 One Supernova Type, Two Different Sources The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy.   Read More...

May 02, 2012 Black Hole Caught in a Feeding Frenzy When it comes to scary things in the universe, it's hard to get much scarier than supermassive black holes. These gigantic, invisible menaces lurk in the centers of galaxies, hungrily vacuuming up everything within reach - or so we think.   Read More...