Atmospheric pressure on earth's surface is 101 kPa. Atmospheric pressure on Mars is 0.61 kPa. As you can see, at 0.61 kPa, liquid water (purple) basically can't exist. Below about 0 degrees C you have ice, above that you have vapor.
Atmospheric pressure on earth's surface is 101 kPa. Atmospheric pressure on Mars is 0.61 kPa. As you can see, at 0.61 kPa, liquid water (purple) basically can't exist. Below about 0 degrees C you have ice, above that you have vapor.
So, what’s with all the water chatter on Mars about ?