Mars Perseverance Rover Update: Pebbles Before Mountains

Mars Perseverance Sol 320 — NASA’s Mars Perseverance rover acquired this image using its onboard SHERLOC WATSON imager. The camera is located on the turret at the end of the rover’s robotic arm. The image was acquired on Jan. 13, 2022 (Sol 320). (Credits: NASA/JPL-Caltech)

by Jennifer Trosper
Project Manager
NASA’s Jet Propulsion Laboratory

NASA’s Mars 2020 mission team has been working methodically and thoroughly, making good progress on understanding the best path forward to remove the uninvited pebbles from Perseverance’s bit carousel. Over the previous weekend, and earlier this week, operational sequences were developed and tested to remove these rocky interlopers.

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The Next Steps for Sampling on Perseverance

This Mastcam-Z image of a portion of the Artuby ridgeline shows large (meter-scale) boulders similar to those Perseverance is expected to encounter at Citadelle. (Credits: NASA/JPL-Caltech/ASU)

Written by Jennifer Trosper
Project Manager at NASA’s Jet Propulsion Laboratory

I will always remember the moments around our first sampling attempt. Longtime friend (and Sampling System Chief Engineer) Louise Jandura and I were in the operations area awaiting the next data downlink. It was “so far, so good” with our earlier morning results showing we had achieved a full-depth borehole. Other members of the team began to filter in as images of the sealed sample tube came up on the ops room monitors. We were all starting to get that feeling you can get in this business when a big milestone comes together because, at first look, it appeared to be our first cored sample. But within minutes, the team noted that the volume probe indicated no sample was in the tube, and we quickly switched to problem-solving mode – once again trying to solve another problem tossed our way from the surface of Mars.

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NASA to Brief Early Science from Perseverance Mars Rover

Perseverance’s First Road Trip: This annotated image of Jezero Crater depicts the routes for Perseverance’s first science campaign (yellow hash marks) as well as its second (light-yellow hash marks). Credits: NASA/JPL-Caltech/University of Arizona)

PASADENA, Calif. (NASA PR) — NASA will hold a virtual media briefing at 1 p.m. EDT Wednesday, July 21, to discuss early science results from the agency’s Perseverance Mars rover and its preparations to collect the first-ever Martian samples for planned return to Earth.

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NASA’s Perseverance Rover Begins Its First Science Campaign on Mars

Mastcam-Z’s 360-degree View of “Van Zyl Overlook”: NASA’s Perseverance Mars rover used its Mastcam-Z imaging system to capture this 360-degree panorama of “Van Zyl Overlook,” where the rover was parked as the Ingenuity helicopter performed its first flights. The 2.4 billion-pixel panorama is made up of 992 individual images stitched together. (Credits: NASA/JPL-Caltech/ASU/MSSS)

The six-wheeled scientist is heading south to explore Jezero Crater’s lakebed in search of signs of ancient microbial life.


PASADENA, Calif. (NASA PR) — On June 1, NASA’s Perseverance Mars rover kicked off the science phase of its mission by leaving the “Octavia E. Butler” landing site. Until recently, the rover has been undergoing systems tests, or commissioning, and supporting the Ingenuity Mars Helicopter’s month of flight tests.

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