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PH₃-nominal 💀xDEADCE11 22 Jun 19
Replying to @Dr_ThomasZ
It sounds to me that if there were Arrestrical volcanism involved in the emission and detection of methane in-situ, would there not have had to be recent volcanic activity to release the chemical whiffs for the on-Mars scintillator to pick up, or am I missing something?