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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 (38 children)

There's also the gravity interaction: an infinitely falling object that never reaches the bigger body is also accelerating the bigger body.

Your forever falling object is shoving the earth upward, very slowly. That could matter in the long enough term... But it seems kinda meaningless compared to the other ways you could use a portal.

Still, might be handy if you need to adjust the orbit of a planet and are willing to wait.

[–] [email protected] 1 points 9 months ago (34 children)

It would be a very Cave Johnson thing to try to fix global warming by pushing the earth away from the sun.

[–] [email protected] 1 points 9 months ago (32 children)

The only thing more Cave Johnson would be using relativistic weapons to blow up the sun