Why do we initially say “candidate”? Because before HiRISE acquires an image, the Context Camera on MRO might observe something that could be an impact, but their resolution is not like ours. So in one of their images, there was a large diffuse dark blast zone that was not present in an earlier observation, so that team asked HiRISE to acquire a high resolution picture to confirm if this is an impact crater.

ID: ESP_074999_1845
date: 27 July 2022
altitude: 270 km

https://uahirise.org/hipod/ESP_074999_1845
NASA/JPL-Caltech/UArizona
#Mars #science #NASA