jul 262013
The Sculptor Galaxy and the Limits to Galactic Growth

  Astronomers have long assumed that when a galaxy produces too many stars too quickly, it greatly reduces its capacity for producing stars in the future. Now, a group of astronomers that includes Fabian Walter from the Max Planck Institute for Astronomy were able to obtain the first detailed images of this type of self-limiting [continue reading]

jan 032013
Galaxy Core Spits Particles Flow Caused by Millions of Star Births

  A continuous stream of charged particles is erupting from the center of our galaxy, the Milky Way. This, conclude astronomers on 3 January in Nature, is a by-product of the birth of new stars. The outflow would also seem to play a part in the Milky Way’s magnetic field. One of the authors is astronomer Marijke [continue reading]

nov 282012
Largest Quasar Outflow Observed

  Virginia Tech physicists have discovered a quasar with the most energetic outflow ever seen, a finding that may answer questions about how the mass of a galaxy is linked to its central supermassive black hole mass and why there are so few large galaxies in the Universe. This artist’s impression shows the material ejected [continue reading]