I'm of the opinion that the only way humanity will travel through space in any significant way will be after the creation of AI which then goes in our stead. Ha

I'm of the opinion that the only way humanity will travel through space in any significant way will be after the creation of AI which then goes in our stead. Having biological bodies just doesn't work well for long term space travel for so many reasons. By the same extension if we ever had a UFO visitor from another planet, I believe there wouldn't be some alien body. Just a ship with a computer.