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.

The image comes from Dec. 23. The rover snapped multiple pictures of clouds that day. The Curiosity team highlighted one shot in a mission update on Jan. 8. The view shows a rocky hill with filmy ...

Instead of being formed of ammonia ice -- the conventional view -- it now appears they are ... he demonstrated that the abundance of ammonia and cloud-top pressure in Jupiter's atmosphere could ...