Galaxy Clusters' Hot Gas Could Halt Star Formation

Galaxy clusters house thousands of galaxies and endless streams of stars.Such a dense urban environment may sound like an ideal home for a galaxy, right? Not exactly. Astronomers know that once a galaxy is absorbed by a massive cluster, its star formation soon comes to a halt. And for years, researchers have tried to figure out why this phenomenon, known as “quenching,” occurs, but it continues to remain a mystery.To finally crack the case, a team of astronomers from the Un