Astronomers have revealed the most distant cluster of galaxies ever observed, caught at a never-before-seen stage of development. Cosmos-Aztec3 has been described as a "metropolis in the making", because such clusters are believed to grow like cities, absorbing outlying villages. It lies 12.6 billion light years away, and appears to be just tens or hundreds of millions of years old. Read more
NASA Telescopes Help Identify Most Distant Galaxy Cluster
Astronomers have uncovered a burgeoning galactic metropolis, the most distant known in the early universe. This ancient collection of galaxies presumably grew into a modern galaxy cluster similar to the massive ones seen today. The developing cluster, named COSMOS-AzTEC3, was discovered and characterised by multi-wavelength telescopes, including NASA's Spitzer, Chandra and Hubble space telescopes, and the ground-based W.M. Keck Observatory and Japan's Subaru Telescope. Read more