• psud@aussie.zone
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    18 days ago

    Aside from all else, the first image was taken on film lit by daylight, the second was shot on digital at high ISO lit by moonlight with a little sunlight at one edge

    Moonlight doesn’t have the same colour rendering quality as sunlight

    • vortic@lemmy.world
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      18 days ago

      Thanks for the info, that’s awesome! Based on the quality of the image, I’d guess this was a specialized camera designed to have a broader range of sensitivity. Do you know if that’s right or did they just use a nice DSLR?

      Also, the first image has been corrected for rayleigh scattering, either algorithmically or artistically. The second image does not appear to have been corrected. It looks similar to what we get from geostationary satellites prior to performing rayleigh scattering correction.

      • Echo Dot@feddit.uk
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        18 days ago

        There is a much higher quality version of the second image on NASA’s website. I think the reason the second image has so much colour ranges because it was taken in log, but that’s just a normal SLR camera feature. I think there’s even a way of getting my phone to take pictures in log, it just uses a lot of memory so it’s not on by default

    • Hadriscus@jlai.lu
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      18 days ago

      Best I can do is more gravitas in my Lemmy comments. not sure it’s enough for the planet to collapse but I can try, if there’s a chance of it ending our current conundrum

  • 667@lemmy.radio
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    19 days ago

    This helps explain why days seem shorter as we age, the Earth is spinning faster due to the conservation of angular momentum. The days are literally shorter.

    • sga@piefed.social
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      19 days ago

      fun fact, days have actually been getting longer pretty much since formation of earth (well moon to be correct). reason iirc is that moon is slowly moving away from earth, and this results in some dynamics changing and as a result earth spins slower. like billions of years ago, it was closer to 23 hours.

      ps - very rusty memory right now, should have skipped writing instead of half borked fact

      • wia@lemmy.ca
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        18 days ago

        You’re correct. There are more factors involved too, including climate change, since more ice melting means more water as well, moving the mass away from poles to the center to also be affected by the mind pull too.

        All the factors end up changing things by about a millisecond per century. The effect is akin to a spinning figure skater having their arms up over their head vs directly out from their body.