New detailed Pluto photographs reveal ‘young’ mountain range
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That suggests the region they are in, which covers less than 1pc of Pluto's surface, may still be geologically active today.

Nasa experts base the youthful age estimate on the lack of craters there. As with the rest of Pluto, this region is thought to have been hit by space debris for billions of years and would have once been heavily cratered – unless recent activity had given the region a facelift, erasing those pockmarks.

Mr Moore said: "This is one of the youngest surfaces we've ever seen in the solar system."

Unlike the icy moons of giant planets, Pluto cannot be heated by gravitational interactions with a much larger planetary body. Some other process must be generating the mountainous landscape.