Tommaso Treu contributes to exciting NASA discovery

NASA's Hubble Space Telescope has uncovered a cluster of galaxies in the initial stages of construction — the most distant such grouping ever observed in the early universe.

In a random sky survey made in near-infrared light, Hubble spied five tiny galaxies clustered together 13.1 billion light-years away. They are among the brightest galaxies at that epoch and very young, existing just 600 million years after the universe's birth in the big bang.

"Just a couple of years ago, a discovery like this one would have seemed impossible," said Tommaso Treu, team member and a professor of physics at UCSB. "Now, we are not only finding galaxies as close as ever before to the Bang Bang, but we are actually finding entire structures of them!"

Tommaso Treu