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by mcbits 2168 days ago
I love watching video of activity on the solar surface because my brain has no intuition for the immense gravity and plasma dynamics at play. It's almost like getting a glimpse of a world with different laws of physics.
2 comments

The surface gravity of the Sun is only about 27x that of Earth (due to its lower density). More, sure, but not so much that you should consider it different physics.

...of course the temperature and hydrogen composition make it pretty different :)

If I were to visit the sun I’d probably orbit it close up, rather than landing on the surface. Seems like the sensible thing to do.

Being in orbit, I would sense weightlessness while being in the presences of an enormous gravitational field. Just as in orbit around earth: gravity is still there, you just can’t feel it.

Would I notice anything different when weightlessly orbiting something 300,000x more massive than earth?

> Would I notice anything different when weightlessly orbiting something 300,000x more massive than earth?

Yes, due to tidal forces being stronger at one end of you than the other. You could use the formula given below but it looks like about a quarter of a newton.

One other thing: not sure you could "land on the surface" because it's all plasma. Flying through it might be interesting.

https://en.wikipedia.org/wiki/Spaghettification

I would think orbiting near the sun still just feels like free fall (as far as gravity is concerned), but close to an extremely dense object like a black hole might have enough of a gradient to feel the "spaghettification" effect or even be ripped apart by it.

Yep, that's a word! https://en.wikipedia.org/wiki/Spaghettification