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That's such a good explanation! I chose the spreadsheet life instead of the space life, but I especially love difficult ideas explained simply! Is the unexpect
by jrq 8y ago
That's such a good explanation! I chose the spreadsheet life instead of the space life, but I especially love difficult ideas explained simply!
Is the unexpected element of this that it is weird to think that very small black holes interact with each other? What does it mean that they don't collapse into each other and rather stay individual?
- mabbo 8y agoI'm not certain- I too chose the spreadsheet life, but am a space nerd. Someone correct me where I'm wrong! I think it has to do with the number of black holes that would be required, the rate that black holes evaporate naturally(?), and our current best theories of the history and mechanisms of the universe. Like maybe in a universe where all these black holes form, we wouldn't expect to see [something we definitely do see]. So you need to adjust more variables to make that fit the puzzle, but now more things we do see don't make sense. It's a bit like a big Sudoku, but with way more constraints!
- empath75 8y agoBlack holes of any realistic size evaporate very slowly, and will be absorbing more mass than they will be radiating for most of the lifetime of the universe. You’re talking billions of billions of billions of years before most of them even start shrinking.
- the8472 8y agoThe same reason stars or planets don't collide for billions of years. Space is mostly empty and heads-on collisons are rare. So objects usually need to be captured into mutual orbit first via 3-body interactions and then slowly move closer to each other via further perturbations or gravitational waves.