NASA discovery of water on Mars was actually sand

The planet Mars taken by the NASA Hubble Space Telescope when the planet was 50 million miles from Earth

An announcement by NASA in 2015 that liquid water had been discovered on Mars was untimely, based on new analysis.

At a information convention that yr, NASA’s director of planetary science declared: “Liquid water has been discovered on Mars.”

Scientists reasoned that water should be current on the crimson planet to clarify mysterious darkish streaks that appeared to ebb and move with the seasons.

Nevertheless, whereas there may be water on Mars – present on the polar caps, floor ice, in addition to in frosts and hydrated minerals – the proof suggesting bigger volumes of liquid water is ambiguous, based on researchers from the US Geological Survey.

In a brand new paper printed in Nature Geoscience, they declare that Recurring Slope Lineae (RSL) in Eos Chasma, a deep melancholy on the planet, are “inconsistent with fashions for water sources”.

This HiRISE image cutout shows Recurring Slope Lineae on Mars in enhanced color. The narrow, dark flows descend downhill (towards the upper left). Analysis shows that the flows all end at approximately the same slope, which is similar to the angle of repose for sand.​​​​​​​ Credit: NASA/JPL/University of Arizona/USGS. Public domain.​​​​​
Picture:
This HiRISE picture cutout reveals RSL on Mars in enhanced color. Pic: NASA/JPL/College of Arizona/USGS

The researchers – working in cooperation with the NASA Mars Reconnaissance Orbiter Venture – discovered that the RSL had been as an alternative “equivalent to the slopes of sand dunes the place motion is brought on by dry granular flows”.

“Water virtually definitely isn’t liable for this behaviour, which might require the quantity of liquid to correspond to the size of slope obtainable, producing extra liquid on longer slopes.

“As a substitute, the 151 RSL examined by the research authors all finish on related slopes regardless of very totally different lengths.”

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