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Kurzgesagt – In a Nutshell - What Happens If You Destroy A Black Hole?

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Community upload. AI output has not been independently verified.

Short Summary

Main recommendation: Do not attempt to destroy a black hole by feeding it nukes, antimatter, an anti-black hole, or overspinning/overcharging it, since these either just make it more massive or risk exposing a naked singularity that could break physics; the only known safe method is to wait for Hawking radiation to evaporate it. The video concludes that a black hole can be destroyed only by waiting, which for a speck-of-dust mini black hole it would take about 10^44 years; the video does not give a figure for the Moon-mass black hole.

Key Points

  • Throwing mass, energy, matter, or antimatter into a black hole only increases its mass, because black holes respond only to total mass-energy, not to whether the input is matter or antimatter.
  • Black holes are described by just three numbers (mass, spin, and electric charge), so a black hole made from a star, anti-star, or banana is indistinguishable once formed.
  • Colliding a black hole with an anti-black hole cancels the charge but produces a single, more massive, uncharged black hole.
  • Destroying the event horizon would require overspinning or overcharging the black hole, but electrostatic repulsion and spin limits normally block further feeding, though some scientists have proposed a possible loophole to overfeed it just before the limit, a claim most scientists are skeptical of.
  • If the event horizon were destroyed, the naked singularity could make space, time, and predictability break down, so the video argues nature likely prevents this.

Details Worth Noting

  • Concrete instructions: The video gives no step-by-step procedure a viewer could follow. The only actionable method it describes is to wait for the black hole to evaporate through Hawking radiation, which slowly reduces its mass; for the speck-of-dust mini black hole this takes about 10^44 years.
  • The singularity is not at the center of a black hole but lies in the future of anything that crosses the event horizon, since space and time swap roles there.
  • Experiment numbering in the video: nuking (1), antimatter (2), anti-black hole (3), destroying the event horizon via spin/charge (4), and overfeeding (5), with the safe option at the end.
  • The video says the time to evaporate depends on mass, giving about 10^44 years for the speck-of-dust example.

Bottom Line

Black holes cannot be destroyed by feeding or colliding them; the only known method is patience, as Hawking radiation slowly evaporates them over vast timescales.

Facts

  1. Black holes are described by just three properties: mass, spin, and electric charge.

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