Hummocky Surface in Kasei Valles
HiRISE PICTURE OF THE DAY: 2 SEPTEMBER 2026

A Hummocky Surface in Kasei Valles

Kasei Valles is one of the largest outflow channels on Mars and probably formed by gigantic flood events and shaped by later glacial activity. This footprint gives us a sample of hummocky and platy regions along part of the edge. “Kasei” is the Japanese word for the planet Mars.



100,000 Image of Mars!
On 7 October 2025, the HiRISE camera aboard MRO acquired an image of the Syrtis Major plains that marks over 100,000 images of Mars, which is a fabulous milestone!
HiRISE Image of Exocomet 3I/ATLAS
On 2 October 2025, MRO turned away from Mars to image 3I/ATLAS, only the third interstellar object ever observed passing through our solar system!

HiRISE Instrument News
HiRISE Instrument News
Since mid-2023, our RED4 CCD has operated only intermittently due to a hardware issue, creating gaps in the middle of some image products and reducing the color swath to 1 CCD width. We continue to command RED4 in all observations and it returns data approximately 50% of the time

Layered Mesa near Mawrth Vallis
This target comes from the public via HiWish: “Similar HiRISE images of mounds around Chryse Planitia have revealed stunning and complex meter and decameter-scale stratigraphy, indicative of widespread, regional-scale processes. This mound shares characteristics with those landforms, so is important to document.”