David Rankin of the Catalina Sky Survey in Arizona spends nights scanning the solar system for potentially catastrophic space ...

Astronomers have discovered a cavalcade of monster galaxy superclusters, incredibly massive collections of galaxies and galaxy clusters in the universe. The most striking example of these 662 new ...

There are clusters of galaxies, and then there are superclusters of galaxies. In the local universe, the Virgo and Laniakea Superclusters reign supreme, the latter stretching some 500 million ...

A newly discovered supercluster of galaxies is so distant that astronomers say its light has been traveling for over 12 billion years to reach telescopes on Earth. But this cluster, named SPT2349 ?56 ...