In the new Chandra image of Cassiopeia A, gas billowing out from the supernova remnant is superheated, causing it to glow in X-rays. A reddish-colored jet of superfast matter can be seen shooting out of the upper left. A second jet, not notable in this image, was ferreted out in other data collected during the same observations. Credit: NASA/CXC/GSFC/U.Hwang et al.
