Olympus Mons Ring Fractures on Caldera Floor
HiRISE PICTURE OF THE DAY: 29 DECEMBER 2025

Olympus Mons Ring Fractures

This target via HiWish from the public keeps it simple: to obtain a high resolution image that examines the fractures near the rim of a nested trough on the floor of the Olympus Mons caldera. There is also an interesting dust plume that is captured in this image.



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

A Fissure near Cerberus Fossae
The linearity of the volcanic vent in this observation, along with evidence of lava flow from the vent, suggests control by combined volcano-tectonic processes.