This image was requested to capture as much of the dune field at the center of an impact crater as possible in order to investigate seasonal dune and frost monitoring. (NASA/JPL-Caltech/UArizona)

Also visible in Context Camera data, in this observation are we seeing stream channels from the northwest wall of an impact crater that are now lithified and standing in relief because of differential erosion? Or something else? (NASA/JPL-Caltech/UArizona)

While perhaps not awe-inspiringly beautiful, sand sheets can tell us about Mars’ current and past environmental conditions as a piece of the puzzle for understanding habitability. (NASA/JPL-Caltech/UArizona)

This close-up image gives the impression of looking like bacterial cells and their internal structures, which travel and split in the process of life. The reality is, we are looking at one of Mars’ polar regions; the South Polar residual cap to be precise. (NASA/JPL-Caltech/UArizona)

The rationale for this requested target is short and sweet: “We are studying the fading of dust devil tracks in order to calculate the implied rate of dust deposition over their lifetime.” (NASA/JPL-Caltech/UArizona)

Also visible in Context Camera data, the objective of this observation is to examine how a lava flow is changed by a mound. Or perhaps it’s the other way around? (NASA/JPL-Caltech/UArizona)