Atacama Cosmology Telescope (IMAGE)

Rutgers University

Atacama Cosmology Telescope

Caption

The Atacama Cosmology Telescope (ACT) in the Atacama Desert of northern Chile, with Cerro Toco volcanic peak in the background. Astronomers conducted a large, uniform survey of the southern sky with ACT, using a breakthrough technique that detects "shadows" of galaxy clusters on the cosmic microwave background radiation. The shadows pointed astronomers to previously unseen massive galaxy clusters.

Credit

Adam Hincks, Princeton University, University of Toronto

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