Curiosity Mars rover’s ChemCam instrument has targeted two cobbles, “Quoy” and “Skor,” which are similar to the larger rock fragments seen in the above image, to compare their chemistries to that of the coherent bedrock slabs in this area.
This image acquired using the rover’s Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover’s robotic arm, on August 26, 2020, Sol 2864.
Credit: NASA/JPL-Caltech/MSSS

 

 

NASA’s Curiosity Mars rover is now performing Sol 2886 tasks.

Reports Michelle Minitti, a planetary geologist at Framework in Silver Spring, Maryland: Based on the initial results from the recent Sample Analysis at Mars (SAM) wet chemistry experiment, the SAM team elected to complement it with a second wet chemistry experiment on the “Mary Anning 3” drill sample.

Curiosity Chemistry & Camera Remote Micro-Imager (RMI) photo acquired on Sol 2886, September 18, 2020.
Credit: NASA/JPL-Caltech/LANL

Curiosity Chemistry & Camera Remote Micro-Imager (RMI) photo acquired on Sol 2886, September 18, 2020.
Credit: NASA/JPL-Caltech/LANL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The first experiment was run with the reagent tetramethylammonium hydroxide (TMAH), and the second will be run with the reagent N-methyl-N-(tert-butyldimethylsilyl)trifluoroacetamide (MTBSTFA).

Fuller picture

“These are called wet chemistry experiments because SAM adds a liquid reagent to the sample before they analyze it,” Minitti explains. “Each reagent reacts differently with the sample, so each experiment shines a slightly different light on what carbon-bearing compounds lie within the sample. Together, we get a fuller picture of the chemistry of the Mary Anning sample.”

The SAM experiment is involved enough that it requires a dedicated sol in the plan, Minitti continues, but the second sol of the plan [2885-2886] was available for other observations.

Curiosity Front Hazard Avoidance Camera Right B image acquired on Sol 2886, September 18, 2020.
Credit: NASA/JPL-Caltech

Curiosity Mast Camera Left image of Mary Anning drill spots taken on Sol 2884, September 16, 2020.
Credit: NASA/JPL-Caltech/MSSS

Coherent bedrock

The robot’s Chemistry and Camera (ChemCam) targeted two cobbles, “Quoy” and “Skor,” which are similar to larger rock fragments, to compare their chemistries to that of the coherent bedrock slabs in this area.

“ChemCam also targeted a white patch, “Lealt,” which resembles the white vein materials we have encountered in so much of our exploration of Gale crater,” Minitti adds.

Gray bulbous materials

Mars scientists have once again targeted “Le Ceasnachadh” for a ChemCam passive observation. The gray bulbous materials that dot the top of this target are hard to hit when researchers are aiming from more than 16 feet (5 meters) away, so they hope to land a few more points on these features in this effort.

Minitti also notes that Curiosity’s Navcam is slated to scan the skies above for clouds and dust devils, and will measure the dust load in the atmosphere.

Lastly, the Rover Environmental Monitoring Station (REMS), the Radiation Assessment Detector (RAD) and Dynamic Albedo of Neutrons (DAN) keep their regular watch on the environment around and below the rover throughout the recently formulated plan, Minitti concludes.

Dates of planned rover activities are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.

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