An Active Gully in Matara Crater
HiRISE PICTURE OF THE DAY: 26 JULY 2025
An Active Gully in Matara Crater

One large gully in particular has had major changes in every winter since HiRISE began monitoring this area.



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.

Glacier-like Features on Mars
It’s somewhat of a mystery why these features have flowed so much when they are so thin, the ice is so cold, and Martian gravity is so low.