Kurzgesagt – In a Nutshell

Black Holes Explained – From Birth to Death

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Replace the Sun with an equally massive black hole and Earth’s orbit would largely stay the same, but Earth would freeze.
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A smaller black hole can destroy you before its horizon, while a supermassive one may let you travel far inside.
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A falling observer could watch the universe race forward in fast-forward, potentially revealing its future.
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Black-hole evaporation accelerates as it shrinks: room-temperature radiation at asteroid mass, solar heat at mountain mass, then a massive final burst.
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Inside a black hole’s event horizon, every possible future direction leads inward to the singularity.
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An iron core can collapse in a fraction of a second, with its implosion racing at one-quarter light speed.
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After crossing a black hole’s event horizon, no one knows whether tidal forces tear you apart or a firewall destroys you.
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The biggest known black holes may take a googol years to evaporate, vastly outliving the universe’s habitable lifetime.
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Hawking radiation drains a black hole when one virtual particle falls in and its partner escapes as a real particle.
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Stellar-mass black holes pack several solar masses into asteroid-sized diameters, while supermassive black holes sit at galaxy centers.
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A star survives because nuclear fusion releases radiation that counteracts its own gravitational collapse.

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