31–40 of 151 posts
Is there a reason something like a water rower wouldn’t work on the moon? Possibly with a weighted vest or a weighted seat. Rowing is pretty full body and doesn’t seem that reliant on gravity.
Is there a reason something like a water rower wouldn’t work on the moon? Possibly with a weighted vest or a weighted seat. Rowing is pretty full body and doesn’t seem that reliant on gravity.
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Spin gravity in orbit has its own issues. Most notably you can't anchor the structure anywhere, so won't spin around the spin axis you want but around its center of mass. A center of mass that will shift as people move around, equipment is moved, etc. Another issue is that you need a certain scale, otherwise the Coriolis force as well as differential gravity (the gravity at your feet being higher than that at your he…
> That's quite a bit wider than the typical rocket You can have two habitats connected by a center tube, like an I. Rotate about the center of the I. Or a habitat and a cable connected to a counterweight. It's not really necessary to build a wheel.
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I assume they’ll eventually just build a big gravitron. The seals would be tricky (I guess the axle it spun on could contain a ladder and door?) Of course they could simply stop spinning it whenever they needed to open an airlock. (Or just put it in orbit, where these problems are easier to deal with and you don’t need to deal with day/night radiation shielding/heating.)
Spin gravity in orbit has its own issues. Most notably you can't anchor the structure anywhere, so won't spin around the spin axis you want but around its center of mass. A center of mass that will shift as people move around, equipment is moved, etc. Another issue is that you need a certain scale, otherwise the Coriolis force as well as differential gravity (the gravity at your feet being higher than that at your he…
A big arena for playing professional sports could make a significant amount of money through televised sporting events.
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You know you have to fly all this stuff up there, right? You can dig out one of these pits with a shovel.
Self-sufficiency off-world is going to be much easier if people are healthy and happy. A "gravity gym" is going to be basic healthcare. Wherever we go for the long term, we will ship and/or construct them.
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In a circle, you're in an accelerating reference frame and in theory your body can't tell the difference. The amount of exercise you would have to do to even begin to remotely keep up with earth's gravity is insane. Separately, how does aging fair with zero g? can really old people live longer up there or is it actually worse?
Our bodies are exquisitely optimized for the surface of the Earth. Any deviation from that (gravity, sunlight, gas pressure, gas composition, radiation, etc.) is likely to be deleterious. This does not bode well for expanding out into the solar system. It might only work if we do some genetic engineering to make off-world habitats more habitable.
Regular engineering, of robots, will probably work first.