Infrared images from NASA's Spitzer Space Telescope and the Wide-field Infrared Survey Explorer, or WISE, were combined in this image of RCW 86, the dusty remains of the oldest documented example of an exploding star, or supernova. It shows light from both the remnant itself and unrelated background light from our Milky Way galaxy. Dust associated with the blast wave of the supernova appears red in this image, while dust in the background appears yellow and green. Stars in the field of view appear blue. Image Credit: NASA/JPL-Caltech/UCLA.