Crater Central Pit with High Thermal Inertia. "High thermal inertia" refers to the ability of a material to conduct and store heat, and in planetary science, its measure of the subsurface’s ability to store heat during the day and reradiate it during the night. (Image: NASA/JPL/University of Arizona. Approx 5 km across).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2016-01-13 12:15
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/24252039682/">ESP_016659_2175</a>