The emission of X-rays is usually the domain of the energetic events of the universe: hot stars, supermassive black holes, and the like. However, since 1996, with Comet Hyakutake, we have learned that ...

A newly discovered object in deep space may help astronomers solve one of the biggest mysteries about the early universe. Scientists believe a strange "X-ray dot" spotted by NASA's Chandra X-ray ...