When it landed on Mars in February, Perseverance kind of stole the show from another rover: Curiosity. It’s been nearly ten years now that the latter cleared the Gale Crater. Thanks to the ChemCam telescope, a French-American team just discovered that, in the past, the Martian climate alternated between droughts and wetter periods. William Rabin, National Center for Scientific Research researcher explains.
In 2012 , Landed on Mars. Heavy machine about 900 strength . It aims to explore a giant crater, 150 kilometers in diameter, Gale Crater. “In the middle of this hole, we find the remains of its filling . to Partially eroded, forming a mountain five kilometers high – Mount Sharp or Aiolis Mons – Who recorded a part of Mars’ history.William Rabin, a researcher at the National Center for Scientific Research, explains in the introduction.
William Rapin is part of the Franco-American team working with – to Chemistry camera completed. “ The peculiarity of this tool – other than the fact that it was made in France – is that it is equipped with . In principle, this is used for concentration To analyze rocks near the rover. But this time, we switched over to using this telescope for image recording and analysis In the landscape as Curiosity approached Mount Sharp. “Curiosity of. It is more specialized in
Climate change on Mars
Thanks to the high-resolution images, the telescope A first glimpse of this region. “We noticed new structures there. Above the clay formation, at least at the bottom of the formation with sulfates, we detected sediments that were not deposited by the lakes. These are likely arid deposits during a prolonged dry spell in the Martian past. Long-awaited evidence that sulfate from the Gale Crater is linked to environmental change, alteration in »William Rabin explains.So I gave to
At an altitude of several hundred meters, the ChemCam telescope still shows various structures. Which this time seems to correspond to a wet environment. “For the first time, we can track the evolution of the Martian climate over several million years. But the reason is behindRecorded in Mount Sharp is still elusive. “
This is where the Curiosity cart comes into the picture again. We kind of gave him a road map. Now it’s up to him to take a closer look. To search for clues that would allow us to understand what happened on Mars to allow for such climate change.As William Rabin says. By conducting chemical analyzes that will allow the researchers to accurately determine the composition of these deposits. ” The It is a valuable tool for us. The powder it produces is analyzed by to me . » Enough to uncover the secrets that Mars still has in these ridges.
“Curiosity has just arrived at the sulfate transfer.”William Rabin tells us. “The bumps we presented in our study are a few meters higher. The excitement builds when you climb up the rover. . We will be able to begin our class analysis. We are talking about thickness About 500 meters. It will take us years to cover this fish. We don’t know if Curiosity will survive this. But our goal is to collect as much data as possible to understand the cause of the climate changes that occurred on Mars more than three billion years ago.CNRS researcher concludes.The