Any planet that is in this zone is possible to have life?

Someone asked this question i actually put some thought into answering it and double checked a few things then he/she deleted the question.... for **** sakes i am going to post the answer even if i have to post the question along with it....

its in the what is called "goldylocks zone" its a area that is the perfect distance from the sun where ice melts, liquid water is present so molecules can move and meld so life is possible. Mars is on the outer edge of the goldylocks zone (warmest temperature on mars is +5 C coldest is -15 in one of is craters, most of the planet is colder but areas are tolerable for humans, problem is thin atmosphere and too much CO2, as long as colonists base on a or near a ice patch, can make water and air out of it) But mars has unstable axis because it has no moon to stabilize its axis spin (Jupiter pulls on the earth like it does mars too but our moon keeps our axis stable).

P.S This is what i know if i am wrong on anything feel free to correct me.