Note: Any images of the interstellar comet 3I/ATLAS are considered NASA-wide news.
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Dune Field Activity Monitoring
HiRISE PICTURE OF THE DAY: 10 NOVEMBER 2025

A Dune Field of Mars

The science goal of our observation is checking to see if (1) dune alcoves are forming and (2) if autumn or winter frost is forming that can help to investigate a connection between them. This is part of larger mid-latitude dune field activity study. This field is just south of the central peak we imaged in an earlier observation.



HiRISE Instrument News
Since July 23, 2023, HiRISE observations have lacked data from the RED4 CCD due to a hardware issue, creating a gap in the middle of image products and reducing the color swath to 1 CCD width. We are investigating the hardware issue and may be able to acquire some RED4 data in the future.

Glacial (Ice) or Lava Flow?
The geologic setting and latitude here suggest this is a glacial (ice-rich) flow, but the surface is broken into plates like many lava flows on Mars.