How much do you know about the black holes in the universe? Do BBC’s short test to find out and, when you’ve finished, you might like to listen to Professor Stephan Hawking, the world’s most famous scientist.
How much do you know about the black holes in the universe? Do BBC’s short test to find out and, when you’ve finished, you might like to listen to Professor Stephan Hawking, the world’s most famous scientist.