this post was submitted on 30 Apr 2024
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You know like the kind that go on a window or bathroom mirror or on the wall or in the shower. They need the atmosphere pushing down on them to work, right?

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[–] NeptuneOrbit 65 points 2 months ago (23 children)

Yes. They won't work because they operate on a difference in air pressure providing a force. No air? No force. Same reason an airplane wing won't provide lift in the upper atmosphere.

But, compare to a rocket engine that does NOT need an atmosphere to push against.

[–] [email protected] 3 points 2 months ago (1 children)

Right. So just strap a Saturn V to my space suction cup and I’m golden?

[–] [email protected] 1 points 2 months ago

The math checks out

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