In January 2023, NASA's Curiosity rover captured images of noctilucent clouds during a Martian sunset, including a rare category of iridescent bright noctilucent clouds that appear feather-shaped ...

They’re called “noctilucent clouds” because they glow in the dark (hence “lucent,” which is derived from the Latin word for light, and “nocti,” which comes from the word “night”).

Noctilucent, or "night-shining", clouds can be seen on Mars, just as they are on Earth. Nasa's Curiosity Mars rover imaged these high-altitude clouds on 17 May, 2019, using its navigation cameras.