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Listener Questions 41: Questions about the mass of the Universe, moons made of gas, and backyard blackholes.

Daniel and Kelly’s Extraordinary Universe

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How to Make a Black Hole Safer

For an earth mass black hole you need to still stay at least a thousand kilometers away from the edge of the black hole to avoid being pulled apart. Unless you're Thanos and you have like more body integrity and ability to resist the tidal forces somehow then yeah you can never even get close enough to stick your finger in. When space gets curved a time goes slow so the things that fall into a black hole for an outside observer their time goes slower. That also controls how quickly it falls into a blackhole. So as things approach the event horizon their time gets slower and slower and they get more and more smeared out. Also they get red shifted by that curvature. So things get

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