It’s hot. It’s crowded. And it’s one of the most raucuous space parties astronomers have ever seen. A research team using a combination of three powerful telescopes is spilling the beans on the galaxy cluster MACSJ0717.5+3745 (MACSJ0717 for short), located about 5.4 billion light years from Earth. The wild system contains four separate galaxy clusters undergoing a triple … Continue reading "Researchers Describe ‘Most Spectacular and Most Disturbed’ Galaxy Cluster"