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This may be the aimless inquiry of a neophyte, but is it possible for something like a bomb to be sent to mars with certain materials (e.g. oxygen, hydrogen, nitrogen, etc.) in an extremely concentrated form..exploded in Mars' atmosphere and over time change the atmosphere and create opportunity for life? For example could the proportionate ingredients create a greenhouse effect on mars to warm the planet.

A subquestion that comes to mind is that would the martian atmosphere be able to hold all the gases sent?