Neil deGrasse Tyson
@StarTalk·5.4M subscribers·1.8K videos
Answering Questions About How Black Holes Die, Entropy, & Vacuums
Posted
October 21, 2025
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October 21, 2025
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56:03Now PlayingWhat is nothing? Could a dying back hole cause the Big Bang? Neil deGrasse Tyson and comic co-host Chuck Nice answer fan questions about a black hole’s dying gasp, lunar eclipses, and the meaning of nothing.
Why don’t we see a lunar eclipse every month? What happens when a black hole reaches the end of its life? Could the Big Bang itself have been a black hole explosion? Learn about how Hawking radiation accelerates, the runaway evaporation of dying black holes, and why their final “last gasp” would light up the universe in gamma rays.
Is “black hole” the right name for it? Should we call it a “black omega star”? We explore the limits of spacetime and causality. Could our universe be influenced by the gravity of a parallel universe? Could the universe “split” to prevent paradoxes if time travel were possible? Neil recalls Stephen Hawking’s time travel party and why the laws of physics might forbid going backward in time.
We discuss Jupiter’s protective gravitational shield, entropy and the illusion of order on Earth, and what really keeps life humming in an open system powered by the Sun. Finally, the conversation ventures into the vacuum. What is a vacuum? Why don’t fans work in space? What is nothing, really? We explore how even the emptiest parts of space still teem with quantum activity, virtual particles, and the fabric of spacetime itself.
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