NASA

Sols 4477-4478: Bumping Back to Business

Written by Sharon Wilson Purdy, Planetary Geologist at the Smithsonian National Air and Space Museum Earth planning date: Monday, March 10, 2025 The Curiosity rover is winding between the spectacular Gould mesa and Texoli butte through beautifully layered terrain. The end-of-drive target from last week’s plan was a rock with a knobby/bumpy texture that appears […]

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Mar 13, 2025 - 02:00

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Sols 4477-4478: Bumping Back to Business

A grayscale photo of a Martian landscape shows very rough, rocky, and cracked terrain extending from the foreground to a horizon line in the distance, where a pair of gently sloped, mounded hills rise up. The one on the left is much smaller and shorter than the one on the right, which is about as tall as a third of the image height, reaching the middle of the frame. In the far distance is a hazy stretch of dunes and hills, extending across the center of the image.

NASA’s Mars rover Curiosity acquired this image using its Right Navigation Camera on March 10, 2025 — sol 4476, or Martian day 4,476 of the Mars Science Laboratory mission — at 04:15:44 UTC.

NASA/JPL-Caltech

Written by Sharon Wilson Purdy, Planetary Geologist at the Smithsonian National Air and Space Museum

Earth planning date: Monday, March 10, 2025

The Curiosity rover is winding between the spectacular Gould mesa and Texoli butte through beautifully layered terrain. The end-of-drive target from last week’s plan was a rock with a knobby/bumpy texture that appears quite different from the typical surrounding bedrock. While this interesting rock was in our workspace today, we ended up being just a touch too close to do contact science. As a result, the science team decided to “bump back” (e.g., drive backwards) to get the rover in an ideal position to analyze and characterize this rock on Wednesday.

In the middle of the rover’s workspace today there was a large patch of soil and sand that MAHLI and APXS teamed up to analyze at a target named “Angeles Crest.” Nearby, Mastcam imaged troughs (depressions) along the axis of the sand ridge to understand how they formed. Mastcam had several other targets in the plan that imaged the workspace and surroundings including “Potrero John,” the knobby rock in the workspace, a rock with similar nodular textures in the distance named “Modjeska Peak,” and a light tan rock with a dome-like structure in the vicinity of “Humber Park.”

ChemCam selected a slab of bedrock and loose (“float”) rock in the workspace to characterize their geochemistry with the LIBS instrument at “Millard Canyon” and “Cajon Pass,” respectively. Off in the distance, the science team selected the face of Gould mesa and upper Texoli butte for ChemCam long distance RMI imaging to get a closer look at the rocks, fractures, and layering.

The environmental theme group scheduled several activities to look at clouds, document the atmospheric opacity, and measure the optical depth of the atmosphere and constrain aerosol scattering properties. We have lots of exciting data in hand and more on the road ahead!