Discovering vestiges of streams on Mars

The Curiosity autonomous probe has found evidence of the existence of a deep stream on Mars, a finding that could help scientists prove water once flowed on the red planet.

Countless smooth pebbles lay on a stone seam in the Gale hole on Mars.

The images that Curiosity sent to earth showed smooth stones in the stone seams. On earth, such stones often exist in streams, rivers, and falls. They were washed and worn. Scientists from the US Aeronautics Agency (NASA) have stated that it is possible that a spring network exists on Mars and smooth stones have been there billions of years ago, the AP reported.

"Curiosity sent pictures of a deep stream on Mars. We felt very excited about this discovery," said John Grotzinger, a scientist at the California Institute of Technology and working for NASA. .

Based on the photos, Grotzinger and colleagues said that if an adult jumps into the stream on Mars, he will see the stream bank with his belt. The size and smoothness of pebbles can help experts calculate the flow rate of water.

Today Mars is like a cold and arid desert. There is no sign that water exists on its surface. However, scientists speculate that it used to be a warm and water-rich planet. The spacecraft flying around Mars once captured many images of channels on the surface of the red planet. The existence of channels shows that it is possible that water once existed on Mars and created those channels. Photos of Curiosity are the first evidence collected on the surface of Mars.