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@floofloof@lemmy.ca to [Dormant] moved to !space@mander.xyz@lemmy.worldEnglish • 3 months ago

Black Hole The Size of 36 Billion Suns Could Lie at The Heart of Cosmic Horseshoe

www.sciencealert.com

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Black Hole The Size of 36 Billion Suns Could Lie at The Heart of Cosmic Horseshoe

www.sciencealert.com

@floofloof@lemmy.ca to [Dormant] moved to !space@mander.xyz@lemmy.worldEnglish • 3 months ago
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In 2007, astronomers discovered the Cosmic Horseshoe, a gravitationally lensed system of galaxies about five-and-a-half billion light-years away.
  • @Isa@feddit.org
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    8•3 months ago

    How large would the event horizon of such a black hole be?

    • @floofloof@lemmy.caOP
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      3 months ago

      I just hopped on this calculator and it says about 710.9 AU, or 106,348,555,982 km (66,081,929,023 miles). So pretty big.

      • Brave Little Hitachi Wand
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        15•3 months ago

        Oh my word. 30 AU is roughly the distance to Neptune, so this black hole is almost 24x the diameter of our solar system.

        Pretty big, yeah.

        • threelonmusketeers
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          3 months ago

          What’s the distance to Proxima Centauri?

          Edit: It’s 268553 AU.

          • Brave Little Hitachi Wand
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            3•3 months ago

            Is this what we do now that Google sucks, just ask each other what Wikipedia says?

            It’s uh, 4.2465 ± 0.0003 light years by the way.

      • @Isa@feddit.org
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        3•2 months ago

        Thanks! 🙂

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