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19 Ιουλ 2022 · Why do Jovian planets have rings? Jupiter, Saturn, Uranus, and Neptune share many similarities. They are made mostly out of gas, they each have many Moons, they have strong winds, they are extremely cold, and they all have rings around them.
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.
SUMMARY: All four jovian planets are surrounded by a set of rings. These rings are made up of rock, ice, and dust particles that range in size from microscopically small to the size of a house.
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.
Jovian Planet Composition. Jupiter and Saturn. — Mostly H and He gas. — these are the most common elements in the Universe — similar in composition to the sun. “Gas Giants”. Uranus and Neptune. — Mostly hydrogen compounds: water (H2O), methane (CH 4), ammonia (NH 3) — Some H, He, and rock — “Ice Giants”.
All the jovian planets have ring systems. Rings are made of many tiny orbiting particles, rocks, and ice balls. Most rings are inside the Roche limit of the host planet. Rings flatten and spread due to collisions, but embedded moonlets and larger exterior moons can keep ring segments in place.
1 Νοε 2004 · The ring system itself is normally separated into three components: the outer ‘gossamer’ rings (1.81–3.2R J, where 1R J =71,492 km) fed by dust from Amalthea and Thebe (Burns et al., 1999), the flattened main ring (1.72–1.82R J), and the torus-shaped ‘halo’ ring (1.40–1.72R J).
