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NASA's Curiosity rover examines unusual bedrock pits on Mount Sharp

During Sols 4988 to 4994, the rover analyzed novel shallow depressions, documented surrounding stratigraphy, and tracked a fading regional dust storm.

The short version

  • NASA's Curiosity rover investigated previously unseen broad, shallow pits in bedrock during its 14th year on Mars.
  • Instruments including MAHLI, ChemCam, and Mastcam analyzed the pit structures, diverse bedrock layers, and distant buttes across Mount Sharp.
  • Mission scientists tracked a regional dust storm, determining by the end of the planning cycle that the event appeared to be dissipating.
  • Data collected will be processed into digital elevation models to help researchers determine the geological processes that created the depressions.

Key facts

  • Curiosity documented broad, shallow pits across bedrock workspaces during Sols 4988 through 4994, including a roughly 1-centimeter pit imaged by the Mars Hand Lens Imager on Aug. 19, 2026.[NASA News]
  • Mission scientists noted that unlike common bedrock pits formed by weathered nodules, these pits were wider, shallower, and lacked visible residual material.[NASA News]
  • ChemCam, MAHLI, and APXS analyzed gray, resistant bedrock layers and loose float pebbles to identify compositional variations in the local stratigraphy.[NASA News]
  • Curiosity conducted long-range imaging and mineralogical observations of distant landmarks, including the Cordillera, Tolhuaca, and Potosí buttes.[NASA News]
  • The environmental science team increased monitoring cadences to track a potential regional dust storm, which showed signs of dissipating by the end of the week.[NASA News]
  • Curiosity's operational schedule lost one planning day due to a disrupted downlink.[NASA News]

What remains uncertain

  • The exact geological or environmental mechanisms that generated the broad, shallow pits remain unidentified.[NASA News]
  • The specific chemical composition and source origin of the scattered gray float rocks are still under analysis.[NASA News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.