Rare Cosmic Fireworks Discovered in Distant Galaxy
Astronomers using NASA’s Chandra X-ray Observatory have discovered that supernova remnants in the spiral galaxy Messier 83 (M83) exhibit unexpected X-ray brightness fluctuations, challenging the long-held belief that these stellar remains simply fade over time. By analyzing 14 years of archived data, researchers found that nearly half of the 22 observed remnants display dramatic variability, … Read more