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...we've all looked at the Milky Way at some point. Even that. If you try and picture what it is, and you learn that it's a galaxy of what, 200 billion, maybe 400 billion suns? What does that mean? 200 billion suns? Most of them have planets. So it'll be trillions of planets. Takes light 100,000 years to cross that thing. None of that is, I think, you can't internalize even that. And that's kind of a simple thing cuz it's just a galaxy. And we know about galaxies. And then you talk about as we've talked about, the center of the galaxy lies this thing. The super massive black hole. And then we don't know what that thing is.— Brian Cox
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