Space
A six-sided storm pattern circles Saturn's north pole. The hexagon spans about 20,000 miles and is a jet stream of 200-mile-per-hour winds, NASA says.
ILLUSTRATION · AIA six-sided jet stream about 20,000 miles across circles Saturn's north pole, NASA says.
The hexagon-shaped pattern was first noticed in images from the twin Voyager spacecraft in the early 1980s and was later observed more closely by the Cassini spacecraft.
Spanning about 20,000 miles (30,000 kilometers), the hexagon is a wavy jet stream of 200-mile-per-hour winds, about 322 kilometers per hour, with a massive, rotating storm at its center.
SourcesEvery claim traced
- Tier 1 · Primary
Advertisement
Keep reading
More facts

Space
Daytime on Mercury can reach 800 degrees Fahrenheit. With no substantial atmosphere to hold that heat, nights can plunge to minus 290 degrees, NASA says.
Verified2 min

Space
The Moon is shrinking. As its interior cools, it has gotten more than about 150 feet skinnier over the last several hundred million years, NASA says.
Verified2 min

Space
Jupiter's moon Ganymede is the largest moon in the solar system, bigger than the planet Mercury. It's also the only moon known to have its own magnetic field.
Verified2 min