New research suggests liquid water is present beneath the south polar ice cap of Mars. Now, a new study argues there needs to be an underground source of heat for liquid water to exist underneath the polar ice cap.
A previous study using radar returns from a martian satellite found evidence for a large body of briny water beneath the south pole of Mars!
A new paper has gone a step further postulating that there must be something providing heat or the water would freeze. Based on the available evidence they suggest a geologically recent intrusion of magma is increasing the geothermal gradient enough for this briny liquid to exist!
Is a volcanic eruption then still possible, if unlikely, on the red planet?