The Cheshire Catgroup grins in the constellation Ursa Major, some 4.6 billion light-years away.Credit: X-ray - NASA / CXC / J. Irwin et al. ; Optical - NASA/STScI via /r/spaceporn https://ift.tt/2qI8K4N
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The Cheshire Catgroup grins in the constellation Ursa Major, some 4.6 billion light-years away.Credit: X-ray - NASA / CXC / J. Irwin et al. ; Optical - NASA/STScI via /r/spaceporn https://ift.tt/2qI8K4N
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