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If you think about it statistically, there has to be life in space. Almost every star in the sky has a planet around it. There’s a hundred billion stars in our galaxy and there’s a hundred billion galaxies in the observable universe. That’s 100 billion x 100 billion. That’s how many planets could be out there. There’s a lot of planets. Then you question how many of those could support life. Let’s say, ‘how many look like Earth?’. Even if one in a hundred of those planets looked like Earth, that’s still a lot of Earth-like planets. Then you question if they have water on them. Maybe they do. And if they have water… well we’ve all watched blue planet. We’re amazed by all this crazy stuff that’s on the floor of our oceans. If you start putting the numbers together... the probability is probably, one. Let’s rephrase the question. Is there intelligent life out there? Almost certainly there’s life out there. But life could mean bacteria, trees or pond scum. But is there intelligent life, like a dolphin? I think that’s a harder one to answer.”