Here's an amazing shot of the Andromeda galaxy -- the nearest major galaxy to our own Milky Way, with hundreds of billions of stars -- in fine detail, as viewed by the Herschel space observatory. The red color in the image points to some of the coldest dust in the galaxy -- a few tens of degrees above absolute zero. The warmer stars are in blue.
July 1, 2013 11:52 AM PDT
Photo by: ESA/PACS & SPIRE Consortium, O. Krause, HSC, H. Linz.