Now the most capacious passenger aircraft can carry no more than 700 people in one flight. So a spaceship for 1000 people is still fantastic.
Probably the least credible, through all aspects. e.g Mars have only 0.4 of eaths gravitational force ; deveploment of a baby in mother womb, with 0 gravity would deform baby terribly, so with 0.4, consequences would be nasty as well. Do no, how we are going to reproduce there. (?) Tho i am all hands up for the vision, and us diversifying across multiple celestial bodies. My favorite : (goosebumbs) 1:39 Disclaimer : im in for Bezos, Musk and Branson, let them all, to bring us there, the more visionaries, the better.