This is the reason that finding a source of Martian water is so important. The planet's atmosphere and temperature make the idea of liquid water seem impossible. George Monbiot.

There may be flowing water on Mars. To explain the water story, I'll need to explain the instrument.

We've known that since the days of Viking. New findings from NASA's Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars.

Since a gallon of water weighs 3.8 kilograms, the cost of bringing a gallon of water to Mars could be about $171,000. This article is more than 4 years old. But is there intelligent life on Earth?

For instance, ice caps the planet's poles, and patches of ice lie over dunes in craters [source: Fountain ]. Liquid water may still flow on Mars, but that doesn't mean it's easy to spot. This is the reason that finding a source of Martian water is so important. This ocean had a maximum depth of around 5000 feet or approximately 1.6 miles deep. There was an ocean on Mars, wreathes the 20% surface of the mars. NASA Confirms Evidence That Liquid Water Flows on Today’s Mars | NASA MARSIS transmits radio waves at Mars using a pair of booms, each 20 meters long, which extend on each side of Mars Express. There is only a small amount of water vapor in the thin atmosphere. Mars is replete with water, but most (if not all) of it is in frozen or vapor form. ----- We (science) doesnt know for sure yet. Moreover, it was bigger than the Arctic Ocean present on earth. But until the Mars Reconnaissance Orbiter started circling the planet and the Phoenix Mars Lander landed on it, most people assumed that if Mars once had liquid water, it hadn't for some time. Investigations in this NASA Educator Guide explore the question of whether there is water on Mars.

There is less water on Mars compared to Earth. No liquid water can exist on Mars, as the surface temperature is too cold. There is no liquid water. Also, it was stretched into the northern hemisphere of the planet. Most of the water known is in the cryosphere (permafrost and polar caps). The conditions on the planet's surface do not support the long-term existence of liquid water. Mars is in the middle of an ice age, so liquid water cannot exist on its surface at the present time. However, the planet seems to have been warmer and wetter in the past. Since a gallon of water weighs 3.8 kilograms, the cost of bringing a gallon of water to Mars could be about $171,000. The radio waves bounce off of Mars, and MARSIS measures the time it takes for the waves to travel there and back. Martain soil has trace amount of water in it. Water from Mars Extracting the Water on Mars from Soil. However, the planet seems to have been warmer and wetter in the past.

Although there have been a few ideas on making clean water from Mars, there are really only two options: Extract it from the soil, or; Extract from the polar ice caps; 2.