Hexagon on Saturn
Captured by both the Voyager and Cassini space crafts,
an enormous 25,000 km atmospheric feature has been detailed on the north pole of Saturn.
The hexagon is similar to Earth’s polar vortex, which has winds blowing in a circular pattern around the polar region. On Saturn, the vortex has a hexagonal rather than circular shape. The hexagon is nearly 25,000 kilometers (15,000 miles) across. Nearly four Earths could fit inside it.
The hexagon appears to have remained fixed with Saturn’s rotation rate and axis since first glimpsed by Voyager 26 years ago. The actual rotation rate of Saturn is still uncertain.