NASA Captures image of Snowy Dunes on MARS

The NASA explains about the snow and ice on Mars by Mars Reconnaissance Orbiter’s High-Resolution Imaging Science Experiment (HiRISE) camera. The image captured on May 21, 2017

According to NASA on Mars northern hemisphere about to have spring at this time.

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‘Over the winter, snow and ice have covered the dunes,’ NASA explains. The snow and ice known to us as dry ice as it is carbon dioxide.

The ice on the smooth surface of the dune cracks during the sun starts shining on it in the spring, and creating beautiful patterns by escaping gas carries dark sand out from the dune below.  Frost is trapped behind small sheltered ridges on the rough surface between the dunes



The Mars surface is covered in all sorts of features that brought to light by the spacecraft over recent years. An infrared image showed worm-like fissures blanketing the floor. The image shows the spread of features known as Ejecta.

Tharsis volcanic province

The presence of different rocks and minerals, like iron-rich minerals as olivine and pyroxene identified by the colour indications. Although, yellow show where the rock has been altered. Blue features represent iron-rich areas

The features seen in this unnamed crater in Mars’ Mare Serpentis region similar to those seen can help to shed light on the subsurface materials. furthermore, found to proceed from bottom of the two unnamed craters. Creating stunning multi-level ‘lava’ falls known as Tharsis volcanic province.



The photo of 19-mile-wide (30 kilometer) crater in northern rim with evidence that a lava flow once surrounded the region. To cascade down the walls. The western part of the Tharsis province in image.

This is evidenced by the lavas coloured darker-toned that overlie the older, and possibly dustier, lighter-toned deposits on the crater floor. Meanwhile, Mars doesn"t have any water at the surface today, scientists say it had a watery past.

   

Moreover, these lavas behaved like liquid water, but in other areas, NASA"s rovers turned to investigate evidence of ancient lakes.

A color-enhanced image has landscape looks almost like a beach here on Earth. Evidence of water on Mars by Mariner 9 mission in 1971. It revealed clues of water canyons as well as weather fronts and fogs.



Mars is currently in the middle of an ice age. Scientists believed liquid water could not exist on its surface. Curiosity found evidence that water good enough to drink. First soil analysed by Curiosity revealed planet contain two per cent water by weight.

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In addition, Scientists claiming more liquid than the Arctic Ocean and the planet kept these oceans for more than 1.5 billion years. There was ample time and water for life on Mar. The last 3.7 billion years lost 87 per cent of its water.