According to Space.com:
Red represents low-energy X-rays, the medium range is green, and the most energetic ones are colored blue. The blue hand-like structure was created by energy emanating from the nebula around they dying star PSR B1509-58. The red areas are from a neighboring gas cloud called RCW 89. Credit: NASA/CXC/SAO/P.Slane, et al.
Full article from Yahoo News.
While the science involved is rather heavy, I could not help but think, "Wow. That is beautiful."
On another note, I am disappointed to find out that this is the first post I have concerning science. This should be amended as soon as possible. I am really embarrassed, considering that all my high school and college life, I have been in the science stream.