Animation of 8 pictures taken by Navcam Left camera aboard Perseverance rover on sol 738 (March 18, 2022) between 5:20:41 and 5:22:29 am Martian local time.
Noctilucent clouds are high altitude clouds composed of water ice or CO2 ice. Too faint to be seen in daylight, they are visible only when the observer and the lower layers of the atmosphere are in planet's shadow, but while these very high clouds are still in sunlight.
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