A Universe of Infinities - Maths talk

Infinity is a notoriously tricky concept to juggle with. It’s not even really a number. And yet it seems to crop up time and again when astronomers try to understand our universe. Did the universe start from an infinitely small speck? Can the universe really be infinitely big? Can there be infinitely many universes in an infinitely big multiverse? Can the the bottom of a black hole be infinitely dense? Find out in this schools talk.

Along the way you’ll also discover what happens when we divide by zero and that the angles in a triangle don’t always add up to 180 degrees. Plus, you’ll be checking in to David Hilbert’s mind-bending infinity hotel for a dip in its infinity pool.

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