Perseverance Encounters A Possible Meteorite On Mars

During the rover’s recent investigation of the bedrock at “Vernodden,” Perseverance encountered an unusually shaped rock about 80 centimeters across (about 31 inches) called “Phippsaksla.”

This rock was identified as a target of interest based on its sculpted, high-standing appearance that differed from that of the low-lying, flat and fragmented surrounding rocks. Last week, Perseverance targeted Phippsaksla with the SuperCam instrument revealing that it is high in iron and nickel.

This element combination is usually associated with iron-nickel meteorites formed in the core of large asteroids, suggesting that this rock formed elsewhere in the solar system.

This is not the first time a rover has encountered an exotic rock on Mars. The Curiosity rover has identified many iron-nickel meteorites across its traverse in Gale crater including the 1-meter wide (about 39 inches) “Lebanon” meteorite back in 2014 and the “Cacao” meteorite spotted in 2023. Both Mars Exploration Rovers, Opportunity and Spirit, also found iron-nickel meteorites during their missions.

As such, it has been somewhat unexpected that Perseverance had not seen iron-nickel meteorites within Jezero crater, particularly given its similar age to Gale crater and number of smaller impact craters suggesting that meteorites did fall on the crater floor, delta, and crater rim throughout time.

Now, on the outside of the crater, atop bedrock known to have formed from impact processes in the past, Perseverance has potentially found one. Due to the exotic composition of this rock, more investigation by the team needs to be done to confirm its status as a meteorite. But if this rock is deemed to be a meteorite Perseverance can at long last add itself to the list of Mars rovers who have investigated the fragments of rocky visitors to Mars.

Written by Candice Bedford, Research Scientist at Purdue University

Astrobiology, Astrogeology,