How could mars have ever had water on it?

Mars currently has liquid water, under the surface. It can only have liquid water at the surface briefly.

Water is possible in a pretty large continuum of states, including the surface of Mars in "summer":

http://www.iceandclimate.nbi.ku.dk/research/other/...

Lets break this down slowly for you.

There IS water on Mars right now. This is a known fact. Water also exists on the Moon, in comets, all over. Hydrogen is the most abundant element in the entire universe. Oxygen the third most abundant. Water is just hydrogen and oxygen. So common sense tells us that water exists all over the universe. Granted most of these places, like the Moon, Mars, comets, Jovian moons, etc it is frozen as ice. But it's still water.

Why would water "float away" on Mars? Mars has gravity you know. It has less gravity than the Earth, but still gravity. What would cause something as heavy as water to just "float away"? Water on Mars now is limited to surface ice and underground ice. But it's still there.

Water wouldn't just "float" away as if the gravitational pull on Mars wasn't strong enough. Granted liquid water only has a small margin where it can exist but the Martian gravity is strong enough to hold on to Ice, liquid water or water vapour. Although water vapour in its atmosphere would eventually be eroded away (along with the rest of its atomophere) by solar winds due to its extremely weak magnetic field that can't protect the entire planet.

The temperature and pressure on Mars is suitable for water to be solid (ice). The melting point of water on Mars would be zero degrees C and the boiling point 10 degrees C. Of course it depens on where in Mars we're talking about.

I believe Phoenix Lander has confirmed the presence of Frozen Water on Mars.

Why would water float away on Mars? There is gravity 1/3rd as strong as on Earth there, which is more than enough to keep water sitting on the surface. Mars would have needed a thicker atmosphere in order to maintain the pressure that would allow water to be liquid, but there is water ice on Mars, thereofre there is water on Mars.

Are you saying the water would float away from mars??? No it wouldn't, Mars, despite having a thin atmosphere, still has a gravitational pull, and since its relatively cold compared to earth the water may be in either liquid or solid form, the only way it would possibly escape is if it was hotter and the water evaporated away, and to my knowledge even that would be difficult since Mars' atmosphere consists of CO2 which is a greenhouse gas.

Mars has been defined as a grimy snowball. If the atmospheric tension became raised, lots of the exterior would be under 30 ft of water. most of the geologic good factors could in basic terms have shaped from water those days so water is estimated to periodically injury with the aid of in flows. all the innovations approximately this has been leaking out interior the interpretations of the information for some years. all the probes confirmed some warning indications of water, it basically wasn't very conclusive in the commencing up one in all these super variety of folk believed there became no water yet in reality there is plenty. The Moon additionally has a brilliant variety of water and contemporary data shows that Mercury has water too.

Evidence shows that it once had lakes and rivers.

Photos of canyons show erosion that could only have been caused by flowing water.

What happen was: Mar's core cooled quicker than Earth's and the water table seeped into the porous rock formations and dropped ten miles below the surface. This didn't just happen over night and the living intelligent beings followed the dropping water table and adapted to the changing enviroment.

Today Martians live by underground lakes ten miles below the surface,

Why would it float away? There has been water ice found on the Moon and the Moon has about half the surface gravity of Mars. Your logic fails.

Mars still has water on it, it may not be liquid water, but underneath the surface at the poles, the NASA rovers spirit and opportunity discovery ice, and also in some rocks samples have shown to be altered structurally by water.

Um. No. It wouldn't. Mars does have a significant gravity field.

If water isn't there, then why has it been detected locked in ice at the polar caps, and why does Mars possess erosional and depositional features consistent with water?