Mars Has Its Charmes

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NASA’s Mars Perseverance rover acquired this image using its SHERLOC WATSON camera, located on the turret at the end of the rover’s robotic arm. Perseverance acquired this image on Sept. 1, 2026 (Sol 1967, or Martian day 1,967 of the Mars 2020 mission) at the local mean solar time of 16:18:01.
NASA/JPL-Caltech

Written by Athanasios (Thanos) Klidaras, Ph.D. candidate at Purdue University 
Sept. 21, 2026
After a long hiatus, the Perseverance rover updates page is back. A lot has happened on Mars in the meantime, and with regular updates now resuming, there is plenty to catch up on — Perseverance has been busy. The rover has spent 2026 exploring the “Lac de Charmes” area, an area of valleys and ridges west of the Jezero crater rim that represent a “wild west frontier” for the mission. The rocks in this area are among the oldest Perseverance has encountered. They formed when Mars was still a young planet bombarded by asteroid impacts, long before the sedimentary rocks inside Jezero crater formed in rivers and lakes. They therefore could teach us much about the earliest era of Martian history — and, more broadly, how rocky planets evolved during the tumultuous early history of our solar system. 
The science team decided to thoroughly explore this ancient and intriguing terrain first, before deciding which rocks to sample. If you take a look at the rover’s location map, you’ll see that Perseverance has followed a looping path winding between interesting outcrops, helping scientists build up an understanding of how “Lac de Charmes” formed. In this time, Perseverance has created a total of 13 abrasion patches on rocks that caught the team’s attention, providing a feast of scientific data. So far, investigations suggest that many appear to have formed from cooled lava or magma (igneous rocks), as well as others that formed in the aftermath of a violent impact (impactite rocks) — and some that show evidence for both processes. Exploration has been boosted by a new algorithm that makes clever use of a processor originally used to communicate with the Ingenuity helicopter to achieve longer and more accurate drives. 
Perseverance’s exploration of the “Lac de Charmes” region is now nearing its end, but the discoveries certainly haven’t stopped. Recently, the science team sent the rover towards an area nicknamed “Idubi,” where hundreds of light-toned boulders were spotted from a distance. “Idubi” has proven to be a scientific bonanza, where rocks of varying texture and composition are concentrated. When Perseverance investigated one of these light-toned boulders, an abrasion patch fittingly named “Badger Peak” revealed a spectacular light-and-dark texture (shown in the image above) unlike any the rover has seen before. An attempt to sample this boulder was unsuccessful due to its high hardness, so the team is now searching elsewhere for a similar rock to sample.  In the meantime, Perseverance has stopped to investigate an interesting outcrop nearby named “Gardenia,” which could be a breccia — a rock that is itself comprised of fragments of many older rocks. This week, the rover will attempt an abrasion to give the science team a detailed look. Even after months of exploring Lac de Charmes, the team continues to be surprised, and with Perseverance preparing to move onward once again, there should be no shortage of new stories to share here. 

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