• hemko@lemmy.dbzer0.com
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      4 hours ago

      Yeah that’s called Kármán line, but it’s just arbitrary line. ISS is still orbiting within Earth’s thermosphere

        • hemko@lemmy.dbzer0.com
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          2 hours ago

          One can be simultaneously on earth, and in space. In fact we all are

          But I’m just arguing that while orbiting earth and being within the Earth’s atmosphere, it’s pretty much still on Earth. Just like you’re still at home even if you’re at the on the yard or even just outside the gate picking up mail from the mailbox. Looking at it from distance, it really doesn’t make difference

      • chunes@lemmy.world
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        1 hour ago

        My favorite fact is that earth’s atmosphere extends 95,000 miles / 150,000 km beyond the moon.

        • hemko@lemmy.dbzer0.com
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          1 hour ago

          I couldn’t find any source for that, but exosphere is considered to extend to 10,000km or 190,000km, from which the latter is about halfway to the moon.

          Anyways those numbers are pretty damn tiny even on a small solar system scale

          Anyways, even if you look from very close, from our own moon to the earth, anything on the low earth orbit is so extremely close to the planet. Just look at some of the famous earthrise photos, and think of something orbiting ~8% of the radius distance

      • TheTechnician27@lemmy.world
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        4 hours ago

        Extremely pedantically, sure. But under that level of pedantry, the whole metric falls apart anyway because there’s surely never or rarely been a point in recorded human history where someone hasn’t jumped/fallen/not been physically touching the ground themselves (let alone this having been measurable). What about “touching”; your feet are just repelling the ground via electromagnetism.

        It’s really obvious what the metric is, and trying to pedant-proof it isn’t worth bloating it into a mouthful. We can just recognize what it obviously means, say “oh, neat”, and move on with our day.

        • Rolder@reddthat.com
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          1 hour ago

          Does it really count as being “on earth” if you’re standing on a floor instead of having your feet directly touch the dirt?

        • Tiresia@slrpnk.net
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          2 hours ago

          The last time everybody was touching a solid object connected to the Earth by touching other solid objects is probably around 15,000 years ago, when humans crossed over into the Americas. Before then, it would probably occur regularly that nearly all humans are asleep and the handful that are awake happen to all be touching the ground.

      • davidgro@lemmy.world
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        4 hours ago

        I guess you could count the atmosphere as part of earth, then things over 100km are in little enough of the atmosphere that it’s not really ‘touching’ it the same way. (For example not generating significant lift)