Kind of chilling to think about these tiny black holes. If they have enough gravitational pull to destabilize a white dwarf, I don't want to know what they'd do to our solar system.

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ttul 2 hours ago | parent | next [-]

These supernova-generating black holes are atomic scale (Schwartzchild radius of 15pm to 15nm), yet they carry the momentum of a large asteroid. If one of these hit the earth, they would cause a life-ending apocalypse like the event that ended the dinosaurs. The fact that this has not happened yet is encouraging.

	▲	shagie 10 minutes ago \| parent \| next [-]
		Can one detect passage of small black hole through the Earth? - https://arxiv.org/abs/0710.3438v1 A physics stack exchange answer about it: https://physics.stackexchange.com/a/55184 The most relevant part: > The total energy created by a PBH roughly equals the energy produced by the detonation of one tonne of TNT, but this energy is the total energy it deposits along its path through the Earths diameter, not the energy it produces on impact. So don’t expect a magnificent explosion, we’d be lucky to see a spark as it hits the ground.
	▲	YetAnotherNick an hour ago \| parent \| prev [-]
		The drag is insufficient to stop it and it would go right through the earth without stopping. It would cause earthquake of 4 magnitude, which is barely detectable. [1]: https://arxiv.org/pdf/1203.3806

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ungovernableCat an hour ago | parent | prev [-]

PBH (if they exist) are microscopic in size. If they're real and qualify as a potential dark matter candidate they have passed our solar system many times with the only thing happening being undetectable gravitational tugs.

	▲	shagie 14 minutes ago \| parent \| next [-]
		Not quite so undetectable... in theory. PBS Spacetime - w Many Black Holes Are In The Solar System? https://youtu.be/wh75ubECL8I And then How to spot tiny black holes that might pass through the solar system - https://www.sciencenews.org/article/primordial-black-holes-s... That references two papers: Probing primordial black holes and dark matter clumps in the Solar System with gravimeter and Global Navigation Satellite Systems networks - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.0... Close encounters of the primordial kind: A new observable for primordial black holes as dark matter - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.0...
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