Earliest Galaxy Cluster (IMAGE)

University of Colorado at Boulder

Earliest Galaxy Cluster

Caption

The composite image at left, taken in visible and near-infrared light, reveals the location of five tiny galaxies clustered together 13.1 billion light-years away. The circles pinpoint the galaxies. The Wide Field Camera 3 aboard NASA's Hubble Space Telescope spied the galaxies in a random sky survey. The developing cluster is the most distant ever observed.

Credit

NASA, ESA, M. Trenti (University of Colorado Boulder and Institute of Astronomy, University of Cambridge, U.K.), L. Bradley (Space Telescope Science Institute, Baltimore), and the BoRG team

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