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.

High in Earth’s mesosphere, a rare and breathtaking phenomenon unfolds—Noctilucent Clouds. These glowing clouds captivate skywatchers, but scientists are growing increasingly concerned.