Wall Divides East and West Sides of Cosmic Metropolis

A new study unveils NGC 604, the largest region of star formation in the nearby galaxy M33, in its first deep, high-resolution view in X-rays. This composite image from Chandra X-ray Observatory data (colored blue), combined with optical light data from the Hubble Space Telescope (red and green), shows a divided neighborhood where some 200 hot, young, massive stars reside.

More at http://chandra.harvard.edu/photo/2009/n604/

Download the desktop: http://www.chandra.harvard.edu/resources/desktops_year.html?year=2009