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Curiosity Rover Unearths New Evidence of Past Habitable Conditions on Mars

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Photo: Curiosity Rover Unearths New Evidence of Past Habitable Conditions on Mars. Source: NASA
Photo: Curiosity Rover Unearths New Evidence of Past Habitable Conditions on Mars. Source: NASA

Geologists have successfully identified ancient riverbeds on Mars, thanks to a combination of images captured by the Curiosity rover, analysis of sedimentary rock formations near the Gulf of Mexico on Earth, and computer modeling. On Earth, rivers play a crucial role in chemical and sediment cycles linked to the emergence and sustenance of life. Therefore, the discovery of fresh evidence of ancient rivers on Mars could be a significant development in the search for signs of life on the Red Planet, as reported by Space.com.

Indeed, a scientific team scrutinizing the data collected by the Curiosity rover within Gale Crater found new proof affirming the existence of rivers on Mars in the distant past. Researchers trained their computer model using images of lava relief and rock layers at the base of the crater taken by Curiosity, as well as three-dimensional scans of sedimentary rock layers on the seabed near the Gulf of Mexico. Subsequently, the computer model was able to simulate the erosion of river-deposited sediments to create terrain closely resembling what the rover observed.

"Our research indicates that Mars may have hosted far more rivers than previously believed, undoubtedly providing a more optimistic outlook on the potential for ancient life on Mars," said geologist Benjamin Cardenas from the University of Pennsylvania, the lead author of the study. He further noted that most regions on the planet could have been conducive to life, and the identification of "ledge" and "nose" formations in Curiosity's photos suggests that rivers were more widespread than previously thought.

Previously, Curiosity also confirmed that Gale Crater, measuring 154 kilometers wide, was once filled with water.

The potential presence of river systems on Mars has been known since the Mariner 9 mission, which launched to the Red Planet in the spring of 1971 and became the first spacecraft to orbit Mars. Mariner 9 captured images of dried-up river channels and valleys on the planet's surface. Subsequently, various rovers found mineralogical evidence, such as sulfur-rich compounds formed in the presence of water. Both rovers and orbital spacecraft also discovered ridges formed by sedimentary deposits in ancient riverbeds that have existed for billions of years.

In mid-October, an artificial intelligence system achieved a groundbreaking milestone by autonomously detecting, confirming, and classifying supernovae for the first time without human intervention.

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