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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The first X-ray taken of a ...