How would Mars look like with water?
Mars is the fourth planet from the Sun. This terrestrial planet has a rarefied atmosphere, with surface characteristics resembling plains, deserts, polar caps of Earth and cratered surface of the Moon.
Liquid water cannot be on Mars due to low atmospheric pressure, which is less than 1 per cent of the atmospheric pressure on our planet.
The two polar ice caps seem to be made mostly of water. If only the south polar ice cap melted water cover Marse’s surface to a depth of 11 metres (36 feet).
Moreover, in 2016 NASA found a large volume of underground ice in the Utopia Planitia area. The amount of discovered water is equivalent to the size of water in Lake Superior.
The map below presents the surface of Mars: if, like Earth, 71% of its surface area was covered with water.
