one bad thing I found while looking for a first source for the terraforming longevity of the Martian atmosphere was that in order to get earth standard pressure at the surface would require an air column at least 1.6 times as deep as Earth's. I think i read that right.
Quote from: Stormbringer on 10/11/2015 10:26 pmone bad thing I found while looking for a first source for the terraforming longevity of the Martian atmosphere was that in order to get earth standard pressure at the surface would require an air column at least 1.6 times as deep as Earth's. I think i read that right.Yes, lower gravity means taller scale height. Which means more atmosphere is needed to achieve a given pressure.I mentioned that within this thread. If memory serves Alf Fass has also mentioned this in this thread.
nope. there is no need to do so. the longevity of the new atmosphere even without the magnetic field is so long that the entire lifetime of the human species is miniscule in comparison. to make a natural magnetic field you would have to inject special radioactive compounds in vast quantities into the core. ....Probably we could build a new planet from the core up before we could non destructively modify Mars' core like that.
It could even be a planetary holiday.
Quote from: ianken on 12/22/2015 07:58 amIt could even be a planetary holiday."Duck" Day.
Wouldn't we have the option to divert less famous comets?
Quote from: Stormbringer on 12/17/2015 04:22 amnope. there is no need to do so. the longevity of the new atmosphere even without the magnetic field is so long that the entire lifetime of the human species is miniscule in comparison. to make a natural magnetic field you would have to inject special radioactive compounds in vast quantities into the core. ....Probably we could build a new planet from the core up before we could non destructively modify Mars' core like that.Yep. You're better off just smashing the planet to make a thick atmosphere all at once then keeping it stocked in a less destructive (but still spectacular) manner going forward. It could even be a planetary holiday.
Or, just build a few small domes.