ESA Science & Technology: New Planck images trace cold dust and reveal large-scale structure in the Milky Way
This image demonstrates how Planck traces this cold dust: reddish tones correspond to temperatures as cold as 12 degrees above absolute zero, and whitish tones to much warmer ones (of order a few tens of degrees) in regions where massive stars are currently forming.
via sci.esa.int
Click through and look at this image. It's breathtaking.
