Questions people actually ask

Saturn is about 120,500 km wide at its equator: 9 times wider than Earth. NASA Science: Saturn facts If Earth were the size of a nickel (a US 5-cent coin), Saturn would be about as big as a volleyball. NASA Science: Saturn facts

NASA’s Saturn facts page puts Saturn an average 1.4 billion km from the Sun: 9.5 astronomical units (1 AU is the Sun–Earth distance). NASA Science: Saturn facts ESA gives a mean distance of 1,429,400,000 km, or 9.6 AU. ESA: Facts about Saturn Saturn comes as close as 1,205.5 million km to Earth and gets as far as 1,658.6 million km. NASA NSSDC: Saturn fact sheet

Saturn has the second-shortest day in the solar system: about 10.7 hours. NASA Science: Saturn facts NASA’s fact sheet gives the length of a Saturn day as 10.656 hours. NASA NSSDC: Saturn fact sheet

One trip round the Sun, a Saturn year, takes 10,755.699 Earth days. NASA NSSDC: Saturn fact sheet That is about 29.4 Earth years. NASA Science: Saturn facts

Saturn is the only planet whose average density is less than water’s. NASA says it could float in a bathtub, if a bath that big existed. NASA Science: Saturn facts Saturn’s average density is 687 kg per cubic metre. Earth’s is 5,513. NASA NSSDC: Saturn fact sheet

Saturn has no true surface. It is mostly swirling gases, and liquids deeper down. NASA Science: Saturn facts The pressure and heat deep inside would crush, melt and vaporise any spacecraft trying to fly in. NASA Science: Saturn facts

At Saturn’s 1-bar cloud level, gravity on average is 1.140 times Earth’s. NASA NSSDC: Saturn fact sheet Spin and squash make a difference: gravity is 0.916 times Earth’s at Saturn’s equator and 1.235 times at its poles. NASA NSSDC: Saturn fact sheet

They are billions of chunks of ice and rock, mostly from dust-sized grains to pieces as big as a house. A few are as big as mountains. NASA Science: Saturn facts ESA says the ring particles are mainly water ice, from microns to metres in size. ESA: Saturn’s rings

The ring system reaches up to 282,000 km from the planet, yet the main rings are typically only about 10 m thick. NASA Science: Saturn facts NASA’s rings fact sheet gives thicknesses of about 5 m for the C ring, 5–10 m for the B ring and 10–30 m for the A ring. NASA NSSDC: Saturnian rings fact sheet

Saturn has 293 confirmed moons as of August 2026, says NASA’s Saturn moons page: more than any other planet. NASA Science: Saturn moons · checked 27 Oct 2026 NASA’s Saturn facts page, NASA’s fact sheet, NASA Space Place and ESA still give 274, the count after 128 new moons were announced in March 2025. NASA Science: Saturn facts · checked 27 Oct 2026 NASA NSSDC: Saturn fact sheet · checked 27 Oct 2026 NASA Space Place: All about Saturn · checked 27 Oct 2026 ESA: Facts about Saturn · checked 27 Oct 2026 NASA NSSDC: Saturnian satellite fact sheet · checked 27 Oct 2026

Titan is Saturn’s largest moon, and the only moon known to have a substantial atmosphere. NASA Science: Titan facts

Saturn’s north pole has a six-sided jet stream, first noticed in Voyager pictures in the early 1980s. NASA Science: Saturn facts The hexagon is about 30,000 km across, a wavy jet stream of 322 km/h winds with a huge spinning storm in the middle. NASA Science: Saturn facts

Saturn itself is a poor place for life, but two of its moons, Enceladus and Titan, have internal oceans and could possibly support it. NASA Science: Saturn facts · checked 27 Oct 2026 But a NASA-led study in December 2025, reanalysing Cassini data, suggests Titan may not have a global ocean: more likely ice, layers of slush and pockets of water possibly as warm as 20 °C. NASA: Study suggests Titan may not have a global ocean (Dec 2025) · checked 27 Oct 2026

Next: NASA’s Dragonfly, the first rotorcraft to explore another world, is due to launch no earlier than July 2028 and arrive at Titan in late 2034, for a planned 3.3-year mission. NASA Science: Dragonfly · checked 27 Oct 2026

Saturn is the farthest planet from Earth that was discovered with the unaided eye, and it has been known since ancient times. NASA Science: Saturn facts