Par quoi sont formés ces polygones et traînées bleutées à la surface de Mars ? © Nasa, JPL-Caltech, UArizona

Strange shapes on Mars with black stripes

Here’s a new geological curiosity from Mars captured by the Mars Reconnaissance Orbiter’s HiRISE instrument, which tells us more about the effect of seasons on the Red Planet’s surface.

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[EN VIDÉO] MRO Satellite: 10 Years of Fascinating Images of Mars
The MRO space probe (Mars Reconnaissance Orbiter) has been in Mars orbit since March 10, 2006. For ten years, the satellite has taken countless images of the planet in order to map its surface. NASA decided to combine the best in this short video.

Mars continues to delight us with unusual new images captured from space by NASA’s Mars Reconnaissance Orbiter.

on March 30 HiRISE . Tool, whose mission is to photograph the Red Planet from every angle, gave us an amazing shot of the surface of Mars, imprinted with strange polygonal patterns. This patch of fractures is found on the soil of Mars At high latitudes. It is in places associated with the appearance of black and blue stripes.

Spring on Mars

This is amazing the shift It is simply related to the adjustment of temperatures in this region of Mars, and more precisely, the arrival of spring!

in winterThe water in the earth freezes, expands and divides the earth’s surface into many polygons. But in the spring, as temperatures rise, dry ice Stored below the surface turns into a gas, without going through the phase liquid. A process known in physics is called sublimation. This transformation opens passages, more specifically at the level of the corners of the polygons, which then allow the jets to be blown Carbon Dioxide. These jets, which contain fine black particles, leave dark and bluish traces on the surface. The direction of these signs may vary depending on the direction of the wind.

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These polygons can last for many years, cracks opening and closing as seasons Mars, the landscape is slowly eroded.

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