It is impossible to visualize the scale of the universe, in the piece of the universe we can see. There are roughly two trillion galaxies. We haven’t counted them all, but that’s an estimate based on surveys of the local universe. Two trillion, 2,000 billion, galaxies. And each galaxy is, let’s say, around the size of the Milky Way. Some are bigger, some are smaller, but the Milky Way has about 400 billion stars in it. It takes light over 100,000 years to cross a galaxy, and there are two trillion of them in a piece of the universe we can see. And we’re very sure that the piece we can see is a small bit of what may be an infinite universe beyond. We don’t actually know. And I always say, you know, don’t get worried about that, ’cause nobody can picture it.