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Which planets can retain which gasses?
•
Jovian Planets
–
can retain all gasses
–
•
Earth and Venus
–
can retain all except H
2
–
Cold trap on Earth
preserves our H
–
•
Mars
–
can retain CO
2
–
barely retains H
2
O
–
•
Titan and Triton
–
only moons which can
retain atmospheres
From our text Horizons, by Seeds