• psud@aussie.zone
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    18 hours 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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      17 hours 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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        16 hours 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

  • Seth Taylor@lemmy.world
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    15 hours ago

    I’ll need Jerry Smith’s opinion on this one

    We are not a celestial dwarf. Earth is a planet.

  • kossa@feddit.org
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    18 hours ago

    It’s because the Apollo mission photos were obviously faked. How would they have known how small Earth really is, duh!

    • Hadriscus@jlai.lu
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      17 hours 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

  • postscarce@lemmy.dbzer0.com
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    2 days ago

    Proof that global warming is not real!!! Read your science… if something gets HOTTER it EXPANDS!!! Those scientist cucks have cucked themselves good this time!!!

    /s (in case it’s needed)

    • SpongyAneurysm@feddit.org
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      15 hours ago

      You got your science all wrong. Global warming is about the earths athmosphere, which is gaseous. When gases get COMPRESSED they become HOTTER. The earth becoming smaller means the atmosphere is becoming SMALLER too, so the gas gets COMPRESSEd! Climate change is because the earth is getting smaller! And they want you to use less oil and gasoline and hook you up to the sun and stuff like heroin addict!!

      /s

  • Rose@slrpnk.net
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    2 days ago

    By the way, speaking of changed colours of planets: if you haven’t been keeping up with the latest news in space imagery and want a real mindbender, check out what has recently happened to Neptune. You may have been thinking, ooooh, what an enthralling blue planet! - bzzzzzt, turns out it’s a pretty bland and boring gas giant, the colours were exaggerated on purpose because otherwise you can’t see shit.

  • 667@lemmy.radio
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    3 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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      2 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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        1 day 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.

        • Axolotl@feddit.it
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          16 hours ago

          Fun fact: China has built such a massive dam that it has slowed down (albeit only slightly*) the Earth’s rotation

          *if i am not mistaken, it was just enough to be misured, nothing too crazy

    • PoopingCough@lemmy.world
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      2 days ago

      Well the second pic is also at night with a high iso and long exposure plus it’s digital so there’s a lot more noise going on.

      • IMALlama@lemmy.world
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        2 days ago

        Speaking in generic terms, film is way more forgiving of over exposure and digital is way more forgiving of under exposure. A fast lens is always king, but once you hit parity on that I would personally take digital for low light any day.

        • Buddahriffic@lemmy.world
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          2 days ago

          Digital should be the better for either one because both can be normalized to a normal exposure, in which case over should still be more accurate (assuming a static scene). With film, you open the shutter and then allow light to hit the single piece of film, which makes up your full data for that image. Digital could record time data with the light data and essentially keep a record of the full exposure, which can then be averaged and normalized to the length of the exposure.

          As long as no pixels get blown out by the exposure, linearly scaling brightness would handle the normalization. Though one of those “take 30 pictures real quick” would also work if you average them together, maybe add a little positional correction if the first frame and last frame are far enough apart that the spacecraft has moved significantly in that time.

        • PoopingCough@lemmy.world
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          2 days ago

          Copy that, my knowledge of the specifics of digital vs analog is about exhausted just from what i posted so i appreciate the added information!