Saturn's Icy Rings
The sixth planet from the sun was first explored in the 1980’s, when Pioneer 11 and Voyager 1 and 2 returned images of the icy comets and frozen moons balanced within the gravitational field of this massive planet.
The bright rings of Saturn make the planet the most recognizable in the solar system. They revolve at high speeds around Saturn’s equator, expanding 200,000 kilometers in width yet only 90 meters in height. NASA scientists discovered that the particles within Saturn’s rings are mostly space dust, rock, and ice – the remnants of a large comet or possibly a small moon that disintegrated and became locked into a stable orbit around the planet, much the way the moon revolves around the earth.
When the Cassini orbiter arrived in 2004, scientists could discern that the rings are actually divided into narrower bands with gaps in between, each consisting of material grouped together by size and density. The icy rings reflect sunlight and are more luminous than Saturn itself.
Saturn, the slowest planet to travel across the ecliptic, was named for the Roman god “Saturnus.” Saturnus was associated with agriculture, seasonal changes, and the passing of time
Saturn is the second largest planet, behind Jupiter, and the two “gas giants” have interesting similarities and differences.
The terrestrial core of Saturn is surrounded by a layer of metallic hydrogen that gradually turns gaseous in the planet’s upper atmosphere. Wind speeds within parallel “belts” of storms are three times faster on Saturn compared to Jupiter, though they don’t appear to be as volatile. Like Jupiter, the atmosphere rotates quickly on it’s axis and at different speeds at the poles than near the equator.
Saturn's Largest Moon, Titan
When Titan was explored by the Cassini-Huygens lander in 2005, the spacecraft discovered a hazy atmosphere containing 98% nitrogen with trace amounts of hydrogen and methane. Hydrocarbon lakes in the northern and southern hemispheres could be contributing to a weather system similar to earth’s, with methane “rains” that storm down into lakes and rivers, shaping the geology of Titan.
The magnetosphere around Saturn isn’t as large as that of Jupiter’s, but it similarly encompasses its nearest moons, protecting them from the solar winds
The 62 moons of Saturn range from the giant Titan, to numerous small and irregular shaped moons, and even pairs of moons that are on the same orbital path.