My guess is that there is other life somewhere in the universe. There are billions of planets orbiting billions of stars in the galaxy. And there are billions of galaxies in the universe. Any Las Vegas odds maker worth his job would have to bet on this one planet not being the only place where life took hold.

Some say it's amazing that life exists here. I say it would be amazing if life only exists here.

But the enormous size of the universe means that we'll never be able to explore all of it, and if there is life elsewhere, they're probably having the same problem.