Universe Sandbox
General Category => Astronomy & Science => Topic started by: Austritistanian on November 05, 2016, 01:17:07 AM
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Check out this cool video by Kurzgesagt
https://youtu.be/ijFm6DxNVyI
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What if black holes are the expanding apocalypse bubbles, and they only appear the way they do because of our limited perception?
O_o
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I dont think so. The black hole in the center of the Milky Way had existed since the Milky Way formed, which is 5 billion years ago. If they were expanding bubbles this thread would've cease to exist.
But there's a theory that an expanding bubble or two had already formed billions of light years away. But it would still take billions f years for it to reach us because the speed of light is finite in any way, and the expansion of the universe could prevent then from ever reaching us. By that time humans would've been completely wiped out.
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If one of those bubbles of destruction did exist, and the expansion of the universe hinders its expansion, how big do you think the bubble would have to get to essentially stop due to space expanding faster than it can travel?
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Infinitely big. Due to dark energy (Or dark matter I forgot), the rate at which the universe expands outweighs the rate at which these bubbles are expanding
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Definitely dark energy (dark matter has the opposite effect, giving galaxies mass where we can't see it and therefore dragging things together) and the universe also seems to be accelerating in its expansion...