Some changes in the tectonic plates of the Earth would have been the reason that made a difference between both planets.
At the beginning of October, NASA announced that with the help of its Perseverance rover, sent to Mars in early 2021, it was possible to affirm what for several years was only a hypothesis: the red planet once had water.
According to the United States Space Agency, the robot managed to find clues in the Jezero crater, one of the largest and most important on the planet, such as a series of rocks in the upper part that formed some escarpments (a geological phenomenon that divides a steep terrain), as well as a very fine grain in its lower part similar to clay, which would reveal the channel and formation of water in said terrain.
“This is the key observation that allows us to confirm once and for all the presence of a lake and river delta in Jezero. Gaining a better understanding of hydrology months before our arrival in the delta will pay big dividends in the future,” said Nicolas Mangold, a Perseverance scientist at the Laboratoire de Planétologie et Géodynamique in Nantes, France.
For its part, NASA explained through a report of its research published in the journal Science that “the findings are based on detailed images that the rover provided of long and steep slopes called escarpments, which were formed from the accumulation of sediments at the mouth of an ancient river that long ago fed the crater lake.”
In the last few hours, several scientists working on the Perseverance project have made some statements that expand the astronomical phenomenon proposed by this discovery. According to the researchers, not only was their water on Mars, but it was also so much that it could even be compared with the water resources that the Earth has at some point in its history.
This was reported by Becky McCauley Rench, a scientist who is part of the project, through a video that NASA published on its YouTube channel. As the expert teaches, although today the red planet is precisely that: a star surrounded by reddish sand, it had a “warmer and more humid” climate in the past.
“Although Mars is an arid planet today, there is evidence of ancient lakes and streams 4 billion years ago (…) it may even have had a shallow northern ocean,” Rench added.
The video also uses several support images which it would be explicitly shown, through a motorized recreation, the shape, and geological details that Mars would have just after the Milky Way was formed, a galaxy in which Solar System is located. . In fact, the researcher both planets (Earth and Mars) were similar at the beginning of the development of this part of the universe thanks to the fact that both were made based on the same organic materials.
So, if both Earth and Mars were very similar in the amount of water they possessed, why did the red planet begin to become arid and unviable for the creation or permanence of life?
The central thesis that the experts have and that Rench tries to explain in the video is that the Earth began to develop tectonic layers over time, which resulted in the water moving faster and, therefore, spreading much more uniformly. For the planet, this helped create life. For its part, on Mars, “geological activity decreased, and the water disappeared; this is precisely the main reason why the “two planets are very different” today.