Four NASA space telescopes recently teamed up to create this new image of M101, aka the Pinwheel galaxy. The colorized composite will help astronomers map the different kinds of activity happening in this large spiral galaxy.
Red, for instance, represents infrared light spied by the Spitzer Space Telescope, which shows dust lanes that are heated up where new stars are forming. Visible light from the Hubble Space Telescope, shown in yellow, comes from stars that trace the paths of the dust lanes.
Blue regions show ultraviolet light captured by the Galaxy Evolution Explorer, which reveals hot, young stars that formed about a million years ago. Finally, data from the Chandra X-ray Observatory, colored purple, lets us see high-energy emissions from supernovae, superheated gas, and hot matter falling into black holes.