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Impossible_Pop620 OP t1_j273rx2 wrote

Reply to comment by s1ngular1ty2 in Black hole question by Impossible_Pop620

See, I get what you're saying, but it's theoretically possible, no? Without faster-than-light stuff?

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bradland t1_j275s79 wrote

No, it is theoretically impossible. Gravity beyond the event horizon is powerful enough to tear matter apart. As in, literally rip atoms apart. No material, no matter how exotic could ever be used to lower anything into a black hole. It would literally tear anything apart, atom by atom.

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Impossible_Pop620 OP t1_j275ymh wrote

OK, how long would this take? If we made the capsule, say 10km wide...give us a few minutes?

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bradland t1_j277vup wrote

Infinitesimal fractions of a second. It is difficult to even conceive the forces that occur near a black hole.

Gravity on Earth is 1 g. A black hole with a mass equivalent to our Sun would have a gravitational force of around 1.6 trillion g. A very fast car like a Tesla Model S can accelerate at 1 g. A really fast missile can accelerate at 100 g. The gravity at the event horizon would accelerate every atom in the theoretical 10 km capsule 1.6 trillion times faster than a Tesla Model S, and hundreds of billions of times faster than the fastest rocket you can imagine.

The reality is that no capsule we could ever hope to construct would survive even approaching the event horizon, much less passing it and returning. No matter in the entire universe could survive it.

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stalagtits t1_j27dc4f wrote

Pure acceleration by a black hole (or any other massive body), with no strong tidal forces present (as in a supermassive black hole), would be completely unnoticeable by the passenger of a capsule falling towards a black hole. Every atom in the capsule would experience the exact same acceleration, so there would be no net forces within the capsule.

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TheSortingHate t1_j2775lb wrote

You may be misunderstanding how the breakdown happens. Gravity isn’t pulling it apart from the outside-in. It’s ripping it all apart simultaneously. Making it bigger changes nothing on the time it takes to break apart. In fact, it probably would just break faster.

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ExtonGuy t1_j276v1m wrote

A few minutes for what? Once the capsule, or cable (or any part of them), crosses the EH, it disappears to the external universe. No electron, photon, proton, quark, etc can go from the inside to the outside.

Baring some really weird Hawking radiation concepts, which take trillions of years to get any information out from a reasonable size BH.

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stanksnax t1_j274x8e wrote

If by theoretically you mean completely ignoring several basic principles of the very nature of space time, relativity, gravity and engineering then yes, it's possible.

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Impossible_Pop620 OP t1_j27512w wrote

You only mentioned material stresses in 1st reply...

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borange01 t1_j275c88 wrote

He wasn't the one that posted the first reply

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hex00110 t1_j274u5i wrote

I think not possible , as the gravity would literally pull the atoms apart of whatever material you extend into and beyond the EH

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archlich t1_j279rgb wrote

Gravity overcomes the EM field which propagates at the speed of light that holds molecules together. It is literally impossible to create a tether that would survive.

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