It was big news in 2015 when NASA declared “liquid water found in Mars.”
Now, according to the U.S. Geological Survey, the announcement that Mars contains large amounts of water was premature.
Scientists had reasoned that water must be present on the red planet to explain mysterious darkish streaks that appeared to ebb and flow with the seasons.
A new paper in Nature Geoscience says that “Recurring Slope Lineae,” or RSL, in Eos Chasma, a deep depression on the planet, are “inconsistent with models for water sources.”
The researchers — working in cooperation with the NASA Mars Reconnaissance Orbiter Project — found that the RSL were instead “identical to the slopes of sand dunes where movement is caused by dry granular flows.”
In other words – rolling sand.
“Water almost certainly is not responsible for this behavior, which would require the volume of liquid to correspond to the length of slope available, producing more liquid on longer slopes,” states the conclusion. “Instead, the 151 RSL examined by the study authors all end on similar slopes despite very different lengths.”
For years, NASA has been focused on finding water on other planets and especially Mars. Some scientists have even suggested that the “canals” found on the surface of the planet suggest the planet once faced a global flood “of biblical proportions.” It’s an interesting use of words, because evolutionary scientists reject the idea that Earth was ever covered with water in a global flood, even though it is still more than two-thirds covered in water.