Turns out it’s not quite so bad. 1/160th the pressure doesn’t mean 1/160th density because CO2 is denser for the same pressure, especially Martian temperatures.

Turns out it’s not quite so bad. 1/160th the pressure doesn’t mean 1/160th density because CO2 is denser for the same pressure, especially Martian temperatures. And Jezero crater is much lower than Mars “sea level.”