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In Portal, using the portal gun to get to the moon is the obvious space travel usage, but I think people are overlooking how it'd let you trivially break the rocket equation. (digipres.club)

submitted 9 months ago by [email protected] to c/[email protected]

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In Portal, using the portal gun to get to the moon is the obvious space travel usage, but I think people are overlooking how it'd let you trivially break the rocket equation.

Hell, you could build a >1g torchship using nothing but the ocean.

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[–] [email protected] 1 points 9 months ago

@[email protected] Would you even get thrust, and not just a hole in the universe spewing water out? That mass isn't actually part of the ship at any point, it's in the ocean and then out in space. So the momentum of the ship doesn't actually change