Comment on That explains a lot

• 97xBang@feddit.online ⁨1⁩ ⁨year⁩ ago

  We'd have a quasi-planet.

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• Ultraviolet@lemmy.world ⁨1⁩ ⁨year⁩ ago

  That’s not how that works. It’s not a DnD sphere of annihilation, it’s an infinitely dense point of matter.

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  • Asetru@feddit.org ⁨1⁩ ⁨year⁩ ago

    That shrinks in a vacuum but grows as other matter gets too close. Matter such as “the earth”. Explain how we’re not fucked if it escapes from its magnetic vacuum suspension because Kevin accidently drops it.

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    • Lyrl@lemm.ee ⁨1⁩ ⁨year⁩ ago

      There is a surprising amount of empty space between atoms, and even inside atoms between the eleftron orbitals and the nucleus. Small black holes are so dense they mostly fall through this empty between-atom space and don’t actually hit anything. Even in a matter-rich environment like inside the Earth, you’d need a black hole with more than half the mass of the moon to be large enough to eat matter faster than it loses matter to Hawking radiation.

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• UraniumBlazer@lemm.ee ⁨1⁩ ⁨year⁩ ago

  Ok, so even if it “falls down”, it will probably evaporate way before it even reaches the center. Even if it doesn’t, it will be take A VERY LONG TIME for it to get big enough to eat the planet out or whatever.

  It is very VERY difficult to make something fall inside a black hole. Mostly, stuff just zooms right past it at incredible speeds.

  The earth would be consumed by the sun way before it gets consumed by a black hole.

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  • spooky2092@lemmy.blahaj.zone ⁨1⁩ ⁨year⁩ ago

    You’re talking at scales where the incoming mass has a lot of velocity already. In a stationary frame of reference, the matter would more than likely fall directly in since there isn’t an appreciable amount of rotational momentum involved like there is at stellar sizes.

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• leisesprecher@feddit.org ⁨1⁩ ⁨year⁩ ago

  That’s not really how black holes work. They evaporate really quickly when they’re small enough. And if they’re small, they don’t have much gravity either.

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• OwlPaste@lemmy.world ⁨1⁩ ⁨year⁩ ago

  The way we are going, its for the best

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  • Asetru@feddit.org ⁨1⁩ ⁨year⁩ ago

    I’m not saying we shouldn’t do it.

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