The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun ...

Astronomers have spotted a mysteriously mature “baby cluster” of galaxies in the early universe, scarcely a billion years ...

Add Yahoo as a preferred source to see more of our stories on Google. A group of about 1,000 stars known as the beehive cluster is swarming a sky near you. Stargazers who look up in January may be ...