Mars is not an option. Elon Musk and Richard Branson have it wrong. Just because they’re billionaires with imagination doesn’t mean that they’re not suffering from hubris or delusion.
Musk wants to have the first cargo ship on Mars in 2022. Branson means to have a ship in orbit around Mars in 2022. That’s next year. NASA thinks that they won’t get to Mars to somewhere between 2030 and 2050.