...and there is good evidence for running water having been on Mars at one point in time.....photos taken by Mars orbiters and by Spirit and Opportunity show proof of channels that could only be carved on the surface of Mars by running water.... but it's axis is tilted enough, and gravity is not strong enough, so the water eventually evaporated into space..Our moon helps keep the Earth from having a VERY wobbly tilt on it's axis, thus giving us stable seasons and relatively stable weather patterns, in general..... Mars did not have a moon to stabilize it's axis tilt, and thus, lost it's water and nearly ALL of it's atmosphere.... It only has 1 percent the atmospheric pressure that Earth has...
