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Saturn’s Rings. Most substantial ring system in the solar system. ~1019 kg of mass, mostly water-ice crystals up to ~m in size. Main rings are ~75,000 - 140,000 km from the center of Saturn, with thicknesses generally a few km, but up to ~1,000 km in some places.
19 Ιουλ 2022 · Jovian planets have rings because when they formed, some leftover material was caught by its gravitational field but was too far away for it to be pulled and integrated with the rest of the planet. At least that’s the most plausible theory that astronomers have.
Saturn minus its ring system is almost 10 times that of the Earth, and its mass is about 100 times greater. Its density is the lowest of any planet, 0.7 times that of water.
The ring systems of the Jovian planets result from tidal forces. During planetary formation, these prevented any material that was too close to the planet clumping together to form moons.
G. Jupiter, as well as all of the Jovian planets, has rings. However, its rings are not as large or as visible as those of Saturn. The rings were not discovered until spacecraft were able to image the planet from behind so as to see the rings in relief.
Also called “giant planets,” the Jovian planets occupy orbits in the outer solar system at distances ranging from 5 (Jupiter) to 30 (Neptune) times the Earth’s distance from the Sun.
1 Ιαν 2020 · Seasonal changes in Saturn’s atmosphere are thought to be caused by the rings, which cast shadows on the atmosphere and shield some of the planet from direct sunlight.
