A view of the Puppis A supernova remnant with a close-up image of the fast-moving neutron star RX J0822-4300. X-ray data (pink) and optical data (purple) highlights oxygen emission. Credit: Chandra: NASA/CXC/Middlebury College/F.Winkler et al.; ROSAT: NASA/GSFC/S.Snowden et al.; Optical: NOAO/CTIO/Middlebury College/F.Winkler et al.
