Episode guide
Black Holes: The Deep Rivers of Space
Far away, space itself pours quietly toward places of enormous gravity. This episode visits the deep rivers of the universe from a very safe distance.
The science, gently
- A black hole forms when a giant star's core collapses at the end of its life.
- Nothing that crosses the boundary called the event horizon can return, not even light.
- The nearest known black hole is over a thousand light-years away, unimaginably far from your bedroom.
Wonder together
- What do you think it is like at the edge of the quietest place in space?
- If light cannot escape, how do scientists find black holes? They watch how things move around them.
- What is the strongest pull you have ever felt, and what pulled back?
Tonight's calm-down
Black holes remind us that even space can hold still and keep things. Let your bed be your event horizon tonight: everything that crosses into it stays, held, until morning.