Segue 1: Time Capsule of an Ancient Universe
Most people know that scientists are constantly studying fossilized specimens, looking for the evolutionary rung that connects the long-dead species to those still walking the Earth today, but did you know that astronomers have a cosmic-equivalent? Only their work is done by studying the light from very distant, ancient galaxies (they are the fossils).
The most interesting “fossil” from the early universe we’ve found is that of Segue 1: a galaxy that has all but disappeared from sight. Still yet, it provides many clues to the many generations of star formation that preceded this one: http://goo.gl/GvkD8Y
Image Credits: Sloan Digital Sky Survey (left) / M. Geha (right)