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Don't forget how the lack of magnetic field and low gravity means even if by some scifi feat of giga-engineering you create an atmospheric on Mars, it'll boil o
by InkCanon 2y ago
Don't forget how the lack of magnetic field and low gravity means even if by some scifi feat of giga-engineering you create an atmospheric on Mars, it'll boil off into space (like the previous one did). Mars loses approximately a few kilotons a year, while Earth loses approx 3kg/yr.
- bell-cot 2y agoCompared to the rate a which some cosmic Santa Claus would have to be pouring a human-compatible atmosphere onto Mars in order to (say) provide a human-friendly surface pressure within 1,000 years, a few kilotons of loss per year is not even a rounding error. Figure that you gotta have five-ish psi for people. (Top of Mt. Everest, roughly.) In Mars' lower gravity, you'll need 12.5 pounds(mass) of air per square inch, pressing down, to get that. So about 10 tons per sq. meter...vs. Mars has a radius of ~3,400km.
- tim333 2y agoThat's a lot of tons.