Hubble: Galaxy Cluster Abell 2744
This long-exposure image from NASA's Hubble Space Telescope of massive galaxy cluster Abell 2744 is the deepest ever made of any cluster of galaxies.
Image Credit: NASA/ESA/STScI
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https://science.nasa.gov/image-detail/pia17569_0/
Image CreditNASA/ESA/STScI
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