Transcript

This week, you’ll discover that the very large offers as many challenges to knowledge as the very small. It’s remarkable that, confined to our tiny insignificant planet, we know so much about the make up of our universe. But are there some questions we’ll never be able to answer? For example: is the universe infinite in size? If it is, could we ever know? Einstein proved that information travels no faster than the speed of light. You’ll find out that this means there is a limit to how far we can see. The discovery that the universe is expanding also has consequences for how much we can know about our universe. And if the universe is finite: how does that work, give that the universe doesn’t have an edge?