NASA’s three Great Observatories — the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory – joined forces to probe the expanding remains of a supernova, called Kepler’s supernova remnant, first seen 400 years ago by sky watchers, including famous astronomer Johannes Kepler.
Image credit: NRL/ESA, R. Sankrit and W. Blair (Johns Hopkins University)
