Space is huge. Even if we are the first one in the galaxy and we manage to spread. It's going to be tremendously difficult to do, certainly doable even at today

Space is huge. Even if we are the first one in the galaxy and we manage to spread. It's going to be tremendously difficult to do, certainly doable even at today's technology but with consequence of time. There's likely a habitable planet 4 lightyears away. But we are hundreds of years away if we leave today. Flipside, I won't name names. They are utterly crazy and yet routinely correct. His assertion is aliens are on earth today, they don't use spaceship but are multidimensional. I'm biting on this one. I believe it.