What is a black hole? How big or small can a black hole be, and what would happen if you fell into a black hole?


In this episode of the Radio Astronomy podcast, US astrophysicist Professor Janna Levin discusses her new book Black Hole Survival Guide and sheds light on the cosmic mystery of black holes.

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Iain Todd BBC Sky at Night Magazine
Iain ToddScience journalist

Iain Todd is BBC Sky at Night Magazine's Content Editor. He fell in love with the night sky when he caught his first glimpse of Orion, aged 10.