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Wouldn't the aliens just need to wait for the black hole to evaporate in order to escape? We're talking a long time, but still possible? If it was planned just
by bArray 9y ago
Wouldn't the aliens just need to wait for the black hole to evaporate in order to escape? We're talking a long time, but still possible? If it was planned just right, perhaps they could make it so they emerge in the new Universe.
Also, isn't the assumption that there is a "big crunch" (also a good name for a cereal if it doesn't exist)? We're not sure whether there is a big crunch or heat death? This still seems plausible whether there is a big crunch or heat death - either way a black hole may be the only way for a civilization to stay alive at "the end".
- simonh 9y agoBeing emitted as undifferentiated Hawking radiation, after the black hole has shrunk to microscopic size, and when it finaly ceases to exist doesn't sound like much of a happy ending.
- bArray 9y agoWouldn't the black hole's horizon also shrink past a planet orbiting it as it loses mass?
- simonh 9y agoI don’t think it makes physical sense to talk about planets orbiting inside the event horizon. Black holes only shrink due to emitting Hawking radiation from the perspective of our frame of reference at a distance. We can consider the contents of the black hole to be undifferentiated mass/energy. From the perspective of a planet in that situation, that’s kind of meaningless as the process would take infinite subjective time.
- bArray 9y agoWell, near infinite time is ideal if you're trying to survive the death of the known Universe?