I believe the most likely time and environment for the origin of life on Mars would be never. The possibility of Martian life has been studied with evidence from ALH84001, PAHS, and the possibility of caves similar to those found in the United States.

First, David McKay, the head of a team of NASA scientists, recognized the ALH84001 traces in Martian biology. The bacteria-like structures in ALH84001, similar to life-functioning bacteria found on Earth, were mixed into carbonates when they were formed. This bonding process occurs at a temperature rate in which