Justin Cowart is a Ph.D. candidate studying Martian geology and remote sensing techniques at Stony Brook University in New York. Justin's research interests lie in exploring the Martian rock record, particularly rocks formed at times when no rocks of similar age on Earth have survived. Justin has had a lifelong interest in exploring space, and he has satisfied that curiosity by looking at the images returned by space missions. He got his start in remote sensing by reprocessing archival data to find aesthetically-pleasing images that escaped public release at the time of the mission. He can be found on Twitter as @jccwrt, and on Flickr.
Curiosity looked upward after sunset on sol 2405 (13 May 2019) and saw wispy cirrus clouds in motion, high above the ground. Because of their high elevation, the clouds are still sunlit, making them noctilucent clouds.