neal tyson. first of all, his newest book is "cosmic kqueries."osmos. what's your take on this? >> so, a couple things. as an astro facei sort of have different take. i don't want to that celebrate it. the billionaires on the block, they're trying to open up a new marketplace, space tourism. nobody was doing that before. so yeah, this claims of going into space and there are rules. there are elevation rules about that that bezos is satisfying. it's the 62 mile limit. 100 kilometers and that's the height above which not enough atmosphere between you and the stars for it to glow in daylight. >> but he's not going -- >> in a blue sky, and then the blue sky disappears and you see stars. >> but he's not going in orbit. >> but he's not going into orbit. >> correct. we have an operational definition of space and the climb is if you get that high up, you get your wings, your astronaut woings, not that wing work in the vacuum of space, we'll let that go. the next level is going into orbit. when you're in orbit you're in continuous free fall into space so e