Cloud-watchers can talk all about the interesting shapes they've noticed over the years. They may have been gazing out the car window during a road trip, or tanning on the beach, or on a morning walk.
“Even though the sun has set in Gale Crater, the clouds are high enough in the atmosphere that the sun still shines on them, making them seem to almost glow in the sky,” wrote Alex ...
Mammatus clouds cover the sky over the Ernst-Taehlmann-Park housing ... A rainbow illuminated by the full moon, near the ocean vent of the Kilauea Volcano. Stars fill the sky.