Dune Monitoring in Milankovic Crater
HiRISE PICTURE OF THE DAY: 2 OCTOBER 2025

Dunes in Milankovic Crater

The science goal for this observation is to study seasonal dune and frost monitoring, as well as obtain detailed surface measurements. The CRISM instrument on MRO was requested to “ride along” for this target to assist with frost detection. This is also an example of when different instruments are used together to get more details and coverage of a target.



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.

Complicated Lava Cooling
This HiRISE image shows a classic example of platy-ridged lava. Scientists think that this is the same as a lava type called “rubbly pahoehoe” on Earth.