A study examines how systems of vortices organized in polygons at the poles of Jupiter remain stable over time. The Juno spacecraft has observed patterns of stable vortices organized in polygons at ...

From Death Valley to Chile to Iran, similarly sized polygons of salt form in playas all over the world — and subterranean fluid flows might be the key to solving the long-standing puzzle of why.

The lunar near side with its dark regions, or “mare,” covered by titanium-rich volcanic flows (center) makes up the moon’s familiar sight from Earth (left). The mare region is surrounded by a ...