These impact crater gullies are pretty sharp and steep, and in a longitude with relatively few HiRISE targets. The frost is carbon dioxide, and our goal is observe it through the Martian winter to detect any changes.

ID: ESP_062816_1395
date: 21 December 2019
altitude: 253 km

https://uahirise.org/hipod/ESP_062816_1395
NASA/JPL-Caltech/UArizona
#Mars #science #NASA