The loss rate due to solar wind wouldn't be nearly high enough to require this; topping up would only be necessary every few hundred or thousand years. You could also start it with a few objects the size of 433 Eros or smaller, not millions. Even with this and many other methods combined, it would consume the entire global budget annually and be impossible with currently technology, but in the future that cost will necessarily go down. Logistically it's actually not that challenging if you have the money and the gear, but it's impossible to overstate the importance of both these.That would probably mean the ability to go out to the Ort cloud and grab millions of comets and send them to Mars, and somehow purify the composition of those comets to what we wanted to use. Or maybe some sort of scoop ships to scoop the air of Jupiter, and separate out what we want, and transfer that to Mars. Which is to say, with a Star Trek level of tech, it'd be a massive job. With tech much below that, it would be a staggeringly huge job. Too big to really contemplate.
Yeah I figured it was a Cutlass/Integral/Hygro/JH/Whomp question - sadly only a few of them are left! Perhaps there are young finance guys who can take up the torch...
The loss rate due to solar wind wouldn't be nearly high enough to require this; topping up would only be necessary every few hundred or thousand years. You could also start it with a few objects the size of 433 Eros or smaller, not millions. Even with this and many other methods combined, it would consume the entire global budget annually and be impossible with currently technology, but in the future that cost will necessarily go down. Logistically it's actually not that challenging if you have the money and the gear, but it's impossible to overstate the importance of both these.
Not really. Nobody's really sure what the mechanism was, but the loss rate being strongly associated with early in Mars's history indicates it was probably one of the more catastrophic alternatives. While it's true that gravity probably plays a role in this (compare Venus with Mars given neither has a global magnetosphere), gravitational radiation of gases by itself is unlikely to be the key mechanism. (This tends to occur with say hydrogen even on Earth-massed bodies, but given CO2 is 44 times heavier, 1/3 the gravity is not going to make that large a difference by itself.)It isn't even solar wind, so much as that just holding on to the air in a density sufficient to use requires gravity. And probably gravity more than Mars has.
Last I checked CFC has an upload function you can use. It isn't massive, but I've used it for a couple AARs a loooong time ago.Is there any quick, efficient way to put up screenshots on here without going through all that photobucket business? I'm thinking about starting a new story in Civ IV S&T but I definitely am not going to waste all that time uploading images.