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NeuralParity t1_j4wfm4i wrote

Reply to comment by Weed_O_Whirler in Whats stopping us from sending a probe into a black hole if we haven't already? by stealth941

Somewhat off topic, but why isn't it possible to get information out by setting up a bunch of orbiting relay satellites? Photons can travel from hop to hop since the distance between them is arbitrarily short so my intuition tells me that you should be able to relay information out even if you can't transmit directly. What is it that I'm missing?

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Lyrle t1_j4y1c61 wrote

Outside the event horizon, sure.

Inside the event horizon, space is warped in such a way that the only paths going towards the event horizon are in the past. Going forward in time, all possible paths go closer to the singularity.

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beipphine t1_j4y5bdw wrote

How do black holes evaporate through Hawking Radiation if nothing can escape?

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Lyrle t1_j4y5nvp wrote

Hawking radiation just appears (poof), it doesn't actually cross the event horizon.

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kilo-kos t1_j56towp wrote

Hawking Radiation is theoretically not at all related to the contents of the black hole; it should be random.

However... that means that when a black hole evaporates completely, all information that entered it is destroyed. This is a huge open problem in quantum physics known as the Black Hole Information Paradox.

Interestingly, one recently discovered possible solution is that information is able to exit the black hole via wormholes that could mathematically exist, but don't... https://www.youtube.com/watch?v=epSev7ovVew

But really, we just don't know yet for sure. It's certainly possible that Hawking's original description of Hawking Radiation is incomplete or subtly wrong.

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blscratch t1_j4yotxl wrote

Whether it's photons, radio waves, neutrinos, or relay satellites, you're still trying to gain information from an area that nothing, not even signals, can escape once it's inside.

Edit to say ignore the neutrino part. I'll save an edit to say I know antineutrino has to be said.

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NDaveT t1_j4wg45g wrote

You could, yes. The trick would be getting relay satellites to those intermediate points and keeping them there.

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