The Solar System

Saturn

The ringed planet. Its rings are ice and rock, hundreds of thousands of kilometres wide but mostly only tens of metres thick.

Saturn
Saturn and its rings in natural colour, a mosaic from the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute, Public domain (NASA).
Size
120,536 km across. About 9.4 times as wide as Earth.
One year
29.4 Earth years
One day
10 h 34 min
Moons
More than 270, the most of any planet
Spacecraft
Cassini orbited it for 13 years (2004–2017) and dropped the Huygens probe onto its moon Titan.

Sizes and periods from NASA’s planetary fact sheets; moon counts from NASA Science.