3 Feb 2017

New images show swirling spirals on Mars' north pole


Thirty-two shots collecting images over six years from the European Space Agency offer a new look at the the red planet's white, frozen north pole.

Recent images from the European Space Agency's Mars Express satellite offer a new perspective to the ice cap on the planet's north pole.

Using 32 separate shots collected over a six-year period, the images show dark, spiralling troughs cutting up a million square kilometres of ice-covered terrain.

Weltall Neue Bilder vom Mars zeigen eisige Spirale (picture-alliance/dpa/ESA/DLR/FU Berlin) 

The ice cap and its swirling appearance is believed to have formed when strong winds from the planet's elevated centre blew towards the pole and circled in a similar fashion to hurricane spirals on Earth.

37393304_403Although the ice cap is permanent throughout the year, the winter months can mean up to 30 percent of the planet's atmospheric carbon dioxide precipitates and adds an additional meter of ice to the pole. This adds to the predominantly frozen water and dust on the planet's surface.

When the ice falls on the terrain, it highlights the numerous canyons in the region, including the Chasma Boreale. The chasm cuts across the pole as a 500km-long and 3km-deep feature seen clearly from space.

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