Supernova Remnant (IMAGE) Australian National University Caption False color image of Cassiopeia A using Hubble and Spitzer telescopes and Chandra X-ray Observatory. Credit NASA/JPL-Caltech Usage Restrictions must credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.