Gullies in Ius Chasma
HiRISE PICTURE OF THE DAY: 17 NOVEMBER 2023
Gullies in Ius Chasma

Pristine gullies are common on steep slopes in the middle latitudes of Mars, where they are shaped by the action of carbon dioxide frost.



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.

Ridges in Lycus Sulci
Much of the rocks in this area have been subjected to erosion by the wind, so the surface we see today was originally buried deep underground.