The Astrophysical Journal: Tommaso Treu Contributes to Discovery of Farthest Protocluster Ever Seen

January 10, 2012

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. An astrophysicist at UC Santa Barbara contributed to the discovery.

In a random sky survey made in near-infrared light, Hubble spied five tiny galaxies clustered together 13.1 billion light-years away. Among the brightest galaxies at that epoch, they are very young, living just 600 million years after the universe's birth in the Big Bang.  READ MORE (UCSB Featured News)

Tommaso Treu, UC Santa Barbara