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threelonmusketeers@sh.itjust.works to xkcd@lemmy.worldEnglish · 1 year ago

What if we aimed the Hubble Telescope at Earth?

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What if we aimed the Hubble Telescope at Earth?

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threelonmusketeers@sh.itjust.works to xkcd@lemmy.worldEnglish · 1 year ago
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Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/booksMore serious answers to absurd questions at: https://what-if.xkcd.com/If you poi...
  • ☂️-@lemmy.ml
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    1 year ago

    earth

    • LazaroFilm@lemmy.world
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      1 year ago

      Yes but to what degree of magnification? Would we see a city, a street, a car, a person…?

      • LazaroFilm@lemmy.world
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        1 year ago

        I did some napkin math and came to about 3.5 miles of field of view of pointed at the earth.

        • Cort@lemmy.world
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          1 year ago

          Hubble is old enough that it only has a 1MP camera, so roughly 720p or 1280x720 pixels , so each pixel would represent about 15 feet if you’re generous. A back yard swimming pool would be like 4 pixels, 9 if your parents are rich.

          • LazaroFilm@lemmy.world
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            1 year ago

            This is a much better way of looking at it! Thanks!

      • Jackhammer_Joe@lemmy.world
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        1 year ago

        Earth

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