There’s No Planet B

Re:There’s No Planet B by ben_w on Monday January 16, 2023 @11:23AM (#34402181)

Gravity can be solved the same way as on a space station (spinning), you just don't put the floors at the same angle because you're adding the constant vector from the mass to the frame of reference vector from being in a centrifuge.

Artificial magnetic fields are easy. Sometimes we do them when we don't want them.

Carbon is 1/3rd of the atmosphere (such as it is) by mass. Conveniently in solid form near the poles during Martian winter.

I'm not sure it has nitrogen in any significant quantities, though…

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Re:There’s No Planet B by paulryanrogers on Monday January 16, 2023 @11:45AM (#34402474)

Spinning enough to produce usable gravity is non-trivial and building something like that in space requires overcoming Earth's own gravity well.

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Re:There’s No Planet B by ben_w on Monday January 16, 2023 @01:09PM (#34403584)

Non-trivial yes; although house-sized spinning fairground rides are a thing so it's clearly infinitely easier than the gravity of Mars being a law of physics.

And the only sane way to do this is ISRU, so we don't need to overcome Earth's gravity well for the structural mass.

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