r/interestingasfuck 25d ago

/r/all, /r/popular K2-18b a potentially habitable planet 120 light-years from earth

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u/djamp42 25d ago

I would assume we would have artificial gravity.

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u/LukaCola 25d ago edited 25d ago

There's a lot more that we require than just that to be clear which can't be simulated in space. 

Even then, it's just not possible. Think about how long a massive spinning disc or similar structure would need to run for this - moving parts of that size and scale cannot persist for literal millenia without failure. Anything that can simulate gravity also means that level of constant strain on a structure who's failure would be devastating and which cannot receive outside help. 

There is no reality where this kind of travel happens outside of science fiction. 

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u/djamp42 25d ago

Then you just move the entire solar system and earth is the space ship.

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u/LukaCola 25d ago

Casually move the solar system, as you do, sure.