We need to know the ancient Earth’s atmosphere (& Mars, Venus) Estimate the history of atmospheric escape from data OR make guess from exoplanets or Titan. We need to know what kind of bio-molecules can be formed in different space conditions.
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We need to know the ancient Earth’s atmosphere (& Mars, Venus) Estimate the history of atmospheric escape from data OR make guess from exoplanets or Titan.
Transport of life in space?
(4) Understanding vehicle (asteroid, comet, meteor)
very little role
Ionopause pressure (PB) balances with both SW dynamic pressure (PD=swvsw2) &ionospheric plasma pressure PP (= ikTi)
#1) depending on relative extent of ionosphere and exosphere
#2) because non-thermal > thermal for Earth-sized planet
Formation of many pre-biotic molecules is most likely related to the amount and the oxidation state of N (NH3, N2, NOx) in the ancient Earth (Miller and Urey, 1959).
The ancient condition is this extreme.
Ionopause vs. SW/IMF (minor)
(d) strong (stable) IMF no change as long as SW PD > SW PB
(e) variable IMF lower balance altitude (by cancellation of B)