The rover, which landed in Jezero Crater in February, had been functioning largely as a communications base between the autonomous Ingenuity Mars helicopter and the agency’s Jet Propulsion Laboratory (JPL) over the last couple of weeks, helping to document the rotorcraft’s historic flights.
However, NASA scientists have continued to work in an effort to better understand the red planet’s environmental history, aiming to create a timeline surrounding when the crater’s lake formed and dried billions of years ago.
In order to do so, the arm’s WATSON (Wide Angle Topographic Sensor for Operations and Engineering) camera has captured detailed shots of Martian rocks and the Mastcam-Z cameras have reportedly also studied the rocky terrain.
While igneous rocks are reportedly “more precise geological clocks” that will help to create an accurate timeline, sedimentary rocks are better at preserving biosignatures.
Though harsh winds, sand and dust have complicated the process, NASA said the rover’s arm can help to better understand rocks’ histories by using an abrader to wear away a rock’s surface and reveal its internal composition.
Next, the team can gather more chemical and mineralogical data using instruments on the arm like the SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics and Chemicals) spectrometer’s ultraviolet laser and PIXL’s (Planetary Instrument for X-ray Lithochemistry) fluorescence spectrometer and high-resolution imager.
“When you look inside a rock, that’s where you see the story,” Perseverance’s Project Scientist Ken Farley said a statement.
As the scientists examine more rocks and sediment, Perseverance will collect and cache samples for further study.
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