Graben Southeast of Melas Chasma
HiRISE PICTURE OF THE DAY: 24 APRIL 2026

The Two Graben of Melas Chasma

In this image, we see a North-South trending graben crosscut by two East-West trending ones. The E-W graben show evidence of right lateral faulting. The top graben appear as left echelon faults; the bottom graben offsets the larger North-South graben by about 7 kilometers. Our observation may provide deeper insight into the regional structural geology of the Valles Marineris region.



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

Ejecta Moving into Crater in Chryse Planitia
The objective of this observation is to examine what appears to be ejecta moving into a small crater. More resolution is needed to tell exactly what is going on here. This scene is also visible in Context Camera data. Chryse Planitia is a region where the Viking 1 lander and Mars Pathfinder touched down.