Stitched together from 28 images, NASA’s Curiosity Mars rover captured this view from “Greenheugh Pediment” on April 9, 2020, the 2,729th Martian day, or sol, of the mission. In the foreground is the pediment’s sandstone cap. At center is the “clay-bearing unit”; the floor of Gale Crater is in the distance. Credit: NASA/JPL-Caltech/MSSS

Mars needs Noxema.