this post was submitted on 16 Jan 2024
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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 (41 children)

The Nihilanth could teleport an entire army to earth, the combine can conquer a planet in hours, the g-man has control over time and space, but Cave Johnson's invention could put a hole in a planet

[–] [email protected] 1 points 9 months ago (39 children)

Alternate ending to Half Life Alyx where it turns out the scary thing the Combine has locked up in the vault is Chell.

[–] [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

@[email protected] Now this is bugging me too. If you actually wanted to loop a falling object between two portals and forget about it, would it have to be at one of the Earth's poles? I feel as though otherwise the object would start to drift out from between the two portals due to the Coriolis effect (ignoring the fact that an object left falling like this at the equator would constantly be cancelling out whatever effect it produced 12 hours previously).

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