lensed-galaxies-1.jpg

Gravitationally lensed galaxy cluster MACSJ 0138 ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO), STScI, K. Whitaker et al. Observed with the Atacama Large Millimeter/submillimeter Array (ALMA) and NASA’s Hubble Space Telescope, this composite image shows galaxy cluster MACSJ0138, with the background massive galaxy distorted into rings by gravitational lensing. The early massive galaxies studied by the REQUIEM survey were found to be lacking in cold hydrogen gas, the fuel required to form stars.