entire history has been preserved going back a very long time after 4000000000 years after media alderney. there was certainly time for life to occur on months before the planet lost detachments fear and any record of these beginnings could very well have been preserved under the surface. mass a shitty mars had to use very similar to earth was liquid water comets raining down organic matter and so on just like on earth and they all got neat he said to the man shows special. going to man's i had your feeling that this was the same ingredients from the space of other matters in the same beginnings of difficult changes which on earth produced life also you may be on mars there were these 1st this is dangerous to like making membranes i thought was structured like that the structure of the city. and affable couldn't leave studied the planet a lot and we realized that 3 and a half to 4000000 years ago mars had the conditions that it could have supported the beginning of life in up to his short directions. that's where we've found that the curiosity rover which has been on mars for 7 years now