Sean Carroll
speaker
26,727 appearances
49 recordings
4 series
first heard Apr 2024
last heard 6d ago
Sean Carroll’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 29 in all, peaking in Jun 2026 with 6.
Appearances
And to escape a black hole, you need to actually travel faster than the speed of light.
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Here's why the question is a little more subtle than you might think.
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So just just to fill in a little bit what I just said, a black hole's a region of space time.
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With a horizon around it.
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A horizon is basically um a barrier.
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It's not really barrier.
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You can cross it one way, but not the other.
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It's a it's a boundary, is the right that's the word I'm looking for.
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A boundary that says that if I'm on one side of the boundary, I can't get to the other side without moving faster than the speed of light.
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Okay?
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If you're inside the black hole, you can't escape to the outside without moving faster than light.
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And so you might very naturally ask, could an LQBR warp drive bubble help you change that picture?
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And here's the reason why it's a hard question to answer, because what LQBR did was write down a metric.
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And this is something I guess I have to explain how general relativity works here.
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Einstein's equation and general relativity, I presume you've all read um volume two of the biggest ideas in the universe, sorry, volume one of the biggest ideas in the universe, space-time in motion.
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So you're all familiar with Einstein's equation, right?
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But I can remind you, maybe if you've forgotten, um there's a left hand side to Einstein's equation, which says, here is what the curvature of space-time is doing.
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And then there's the right hand side to Einstein's equation, which says here is the source of matter and energy that is making.
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space-time do that.
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So if you don't have any restrictions at all on what the sources of matter and energy are on the right hand side, every possible space time is a solution to Einstein's equation.
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Showing 441–460 of 26,727 · page 23 of 1337
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