Alt text: They're up there with coral islands, lightning, and caterpillars turning into butterflies.

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[–] 211 points 9 months ago (13 children)

Our planet is scifi as hell. We've got natural magnetic shielding to protect our UV-blocking ozone layer from solar winds. This planet is so damn cozy<3

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  • [–] 139 points 9 months ago (6 children)

    This planet is so damn cozy<3

    Oh! Oh! Let's wreck it by polluting the hell out of it :3

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  • [–] 50 points 9 months ago (3 children)
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    [–] 155 points 9 months ago* (45 children)

    I think it’s more wild that not only are big moons rare, ours is literally the same size as the sun from our point of view.

    It also makes almost exactly 13 laps for every lap the earth makes.

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  • [–] 111 points 9 months ago (35 children)

    Which is why a 13 month calendar all having 28 days would have made more sense

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  • [–] 29 points 9 months ago (13 children)

    12 is an easier number to work with because of how many factors it has

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  • [–] 40 points 9 months ago (11 children)

    hmm, how about 12 months each with 30 days, plus 5 days every year that's not part of any month?

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  • [–] 39 points 9 months ago* (1 child)

    5 days every year that’s not part of any month

    Those are called intercalary months. They had them in the ancient egyptian calendar (5 every year, 6 in leap years) and were usually used for rest and religious ceremonies.

    https://en.wikipedia.org/wiki/Intercalary_month_(Egypt)

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  • [–] 30 points 9 months ago (5 children)

    And from what I have heard on science podcasts, the moon is, and has been, and still will be, moving away from the earth. Making the perfect solar eclipse only for a segment of the earth's history.

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    [–] 57 points 9 months ago (29 children)

    I don’t recall what I was reading, but I once read about a lot of things lined up perfectly for evolution on Earth.

    • In Sol’s habitable zone
    • Has a moon
    • Rotates on tilted axis
    • Stable rotation and orbit
    • Has magnetic field
    • Has Ozone Layer
    • Big planet (Jupiter) close enough to catch random asteroids, but not close enough to harm Earth

    It’s bonkers that it all worked out that way so that I could be here, right now, reading your post and responding. It really boggles the mind and I don’t want to waste my time.

    Welp, guess I’m gonna go look up random curse words in the dictionary. ಠᴗಠ

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  • [–] 42 points 9 months ago

    This is rather as if you imagine a puddle waking up one morning and thinking, 'This is an interesting world I find myself in — an interesting hole I find myself in — fits me rather neatly, doesn't it? In fact it fits me staggeringly well, must have been made to have me in it!' -Douglas Adams

    Lines up perfectly ... for life as we know it. See also: The Anthropic Principle

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  • [–] 16 points 9 months ago (16 children)

    But in the vastness of space, it was practically guaranteed to happen somewhere. There are a set of criteria that allow for the evolution of life (as we know it) and it was going to happen somewhere, the fact that it happened here is no more awesome than it happening 3 galaxies over.

    I know the feeling you are describing and the words to describe what i am trying to say are hard for me to grasp.

    Its like in a film where the hero survives seemingly impossible odds and people watching say "no way, thats impossible" and can't enjoy the film because its too unbelievable. I say no! This is a story about the one almost impossible time all these things happened. Thats the point. Yes its hard to believe, but thats what makes it awesome.

    So the earth being here and humanity and all other animals evolving here is just the time in the impossibly vast universe that the "stars aligned" and the fact that we are experiencing it is just expected.

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  • [–] 12 points 9 months ago

    Look up Douglas Adams’ puddle analogy?

    “If you imagine a puddle waking up one morning and thinking, 'This is an interesting world I find myself in — an interesting hole I find myself in — fits me rather neatly, doesn't it? In fact it fits me staggeringly well, must have been made to have me in it!"

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  • [–] 9 points 9 months ago (8 children)

    How does having a moon and the tilted axis contribute to evolution?

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    [–] 48 points 9 months ago (7 children)

    Winter is kinda wild too. The fact that the planet is tilted just enough to make it cold part of the year, but not so cold that it kills everything, and many plants and animals have integrated this into their life cycles.

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    [–] 47 points 9 months ago* (9 children)

    Ah btw, this is the gravitational form (geoid) of earth:

    The meters is the height difference of orbit.

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  • [–] 21 points 9 months ago (6 children)

    Damn, now I get why cartographers and the like always try to make it prettier in post!

    Never thought I'd be body shaming the Earth, but here we are 🤷

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    [–] 45 points 9 months ago (8 children)

    By far the coolest and most unique aspect of the Earth-Lunar system is solar eclipses. The size and orbital distance is just right to allow for the spectacle we get today.

    This is even more true when you consider that the Moon's average orbital radius is increasing by 3" (76mm) each year. In a million years, the Moon will be too far away to fully cover the Sun. A few million years ago it was close enough to fully cover the corona

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  • [–] 14 points 9 months ago (7 children)

    Honestly, whenever I think about this, I get my tinfoil hat moment. Life being created by statistical probability and chance, well ok. Life being created and people with conscientiousness rising up at exactly the time this one planet has this perfect orbital distance - give me that tinfoil.

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  • [–] 32 points 9 months ago (2 children)

    I get similar feelings about earth when I can see the moon during the daytime. Something about seeing it with clear craters against the blue sky makes it feel much more like we’re just floating in space with a cratered barren partner.

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  • [–] 23 points 9 months ago (1 child)

    And seahorses! Dont forget them!

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  • [–] 22 points 9 months ago (5 children)

    Can't forget magnets. How do they work?

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    [–] 18 points 9 months ago (4 children)

    I wonder if life would exist on our planet if there were not tides.

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  • [–] 9 points 9 months ago (4 children)

    Exoplanets could have tides too though...

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  • [–] 16 points 9 months ago (1 child)

    It's unlikely that there are many exo planets with a moon as big as the Moon. Much more likely to have small ones like Mars. Mercury, Venus and Mars are all great examples of bad shit that can happen to planets: Tidally locked + too close to the sun, rolled over on the side, and finally Mars too small to maintain a molten core and magnetic field. The Moon helps avoid the Venus situation and maybe the Mars problem.

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