Researchers found that a rare supernova might actually be an "impostor" in a close-by galaxy.
Astronomers used data from NASA's Great Observatories, which enabled them to carry out a detailed study of a large young galaxy cluster and they even weighed the mass of the galaxy.
NASA's Chandra X-ray Observatory has spotted something startling. It's identified the smallest supermassive black hole ever detect in the center of a galaxy.
NASA's Chandra X-ray Observatory has shed a bit of light on how star clusters are born.
