Defrosting Dunes
HiRISE PICTURE OF THE DAY: 25 APRIL 2024
Defrosting Dunes

This image shows a field a sand dunes in the springtime while the seasonal carbon dioxide frost is sublimating into the air.



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.