jan 202013
 
The Power of Messier 82's Superwinds

  An international team of astronomers, led by Dr. Kazuya Matsubayshi (Kyoto University), has discovered that outflows of gas from starburst galaxy Messier 82 (see below) collide with a “cap” of gas clouds 40,000 light-years away from the galactic disk. Shockwaves (Note 1) from M82’s central starburst region are the most likely source of the [continue reading]

mei 082012
 
Supernovae Come From Two Different Systems

  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. They’re bright enough to see across large distances, and similar enough to act as a “standard candle” – an object of known luminosity. The 2011 Nobel Prize in [continue reading]