Some massive stars may go out with a fizzle, not a bang. A star that winked out of view could be a “failed supernova,” a stellar explosion that petered out instead of fully detonating, a new study ...

For nearly six months, during the year 1181, people looked up to the skies to find a new star glittering in the constellation Cassiopeia. Chinese and Japanese astronomers recorded the rare event, an ...

NASA's Chandra X-ray Observatory releases its longest-spanning video of X-ray data yet. - NASA / CXC / SAO / Pan-STARRS Astronomers have turned a famous star explosion into a 25‑year time‑lapse, using ...