Science Memes

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submitted 2 months ago by [email protected] to c/[email protected]

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[–] [email protected] 52 points 2 months ago (46 children)

Why is that - wouldn't you be working against solar gravity? Like you don't have to get them there quickly, just launch them in some orbit that will decay and be taken in?

[–] [email protected] 29 points 2 months ago (9 children)

the issue is not counteracting gravity, the issue is decelerating enough to hit the sun

[–] [email protected] 5 points 2 months ago (8 children)

What's wrong with them striking the sun at full speed?

[–] [email protected] 10 points 2 months ago (3 children)

The curvature of spacetime does wild shit to how you would expect physics to work. If you want to fall into a gravity well, you have to slow down or you'll just slingshot past it.

[–] [email protected] 3 points 2 months ago

This sounds an awful lot like the the idea that you can never actually catch up to anything because all you can ever do is close the distance by half.

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

This sounds an awful lot like the the idea that you can never actually catch up to anything because all you can ever do is close the distance by half.

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

Picture going for a very tight periapse in a highly elliptical orbit. Now make the periapse lower. Lower still, within the atmosphere or below the surface of the thing you're trying to hit. If you don't plan on arriving alive it's much cheaper to arrive like a meteor

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