Astronomers using NASA’s Chandra X-ray Observatory to observe galaxy Messier 83 (M83) spotted the unexpected explosive aftermath of a supernova. Typically, the aftermath of a stellar explosion is a ...
A star exploded roughly 260 light-years from Sagittarius A*, the supermassive black hole at the center of the Milky Way, and astronomers have now traced the blast’s fingerprints in X-ray and infrared ...