Jeff Bezos pushed back on criticism that launching rockets was a vanity project for billionaires, saying that the future of the planet — and those who inhabit it — depends on what can be accomplished in space. «I think people don't understand it, or most people don't,» Bezos told co-host Gayle King in an exclusive interview after he landed back on Earth Tuesday. «When you get into space and you can see the Earth's atmosphere, it's so thin and fragile looking.