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OUR BEAUTIFUL UNIVERSE: Hubble’s Final Frontier

Published on Thursday, 01 June 2017 13:32

OBU-Abell370Galaxy cluster Abell 370. (NASA, ESA, J Lotz and HFF Team [STScI])

The last of the six Frontier Fields imaged by the NASA/ESA Hubble Space Telescope centres on the giant galaxy cluster Abell 370, 4 billion light years away. This visible and near-infrared image shows not only the several hundred gravitationally bound galaxies that make up Abell 370, but also more than 100 more distant galaxies. The mass within Abell 370 acts a gravitational lens, distorting and magnifying galaxies that are otherwise too distant to be seen. This allows mapping not only of the distant objects, but also of the distribution of dark matter in the cluster. Massive elliptical galaxies have a yellow tone, spiral galaxies a blue tint. The arcuate structures are images of more than 100 remote galaxies, often multiple images of the same object.

This image is published in the June 2017 issue of Astronomy & Geophysics.

 

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