Chandra reveals flickering supernova remnants in M83 over 14 years

The aftermath of a supernova, a stellar explosion, is usually a slowly fading cloud of hot gas. So when astronomers pointed NASA's Chandra X-ray Observatory at the nearby galaxy Messier 83 (M83), they did not expect to find a population of supernova remnants, or the debris from these explosions, showing dramatic changes in their brightness. The new results have been presented at the American Astronomical Society meeting in Pasadena, California, and published in The Astrophysical Journal.