The thin, red veins of energized gas in this image from the Spitzer Space Telescope are the remains of supernova HBH3. The puffy, white feature in the image is a region of star formation. In this false color image, Infrared wavelengths of 3.6 µm have been mapped to blue, and 4.5 µm to red. The white color of the star-forming region is a combination of both wavelengths. The HBH3 filaments show up only at the longer 4.5 µm wavelength.
Image Credit: NASA