Get Instant Summarized Text (Gist) Mars's northern ice cap is relatively young, with an estimated age between 2 and 12 million years. The ice cap is causing the ground beneath it to depress at a ...

The three-kilometre-thick ice sheet covering Mars's north pole is young, formed between 2 and 12 million years ago. The ice sheet is bending the rocky crust beneath at a rate of 0.13 millimetres per ...