The Mars Curiosity rover has been on the job since the summer of 2012, exploring Gale Crater on the red planet. It's slow going, it has driven only 25 kilometers to date.
But it can be fun to watch, like its
ascent of Mount Mercou, a broad outcrop of rocks on the northern flank of Mount Sharp near the center of the crater, on April 18th 2021.
Mt. Sharp is over 2 miles high and Curiosity is the size of a small car. In the picture, it is above a 20-foot-high cliff where it examined the exposed rocks.
Credit: NASA/JPL/University of Arizona