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Fainter planetary rings can form as a result of meteoroid impacts with moons orbiting around the planet or, in the case of Saturn's E-ring, the ejecta of cryovolcanic material. [6] [7] Ring systems may form around centaurs when they are tidally disrupted in a close encounter (within 0.4 to 0.8 times the Roche limit) with a giant
J1407b is a substellar object, either a free-floating planet or brown dwarf, with a massive circumplanetary disk or ring system. It was first detected by automated telescopes in 2007 when its disk eclipsed the star V1400 Centauri, causing a series of dimming events for 56 days. The eclipse by J1407b was not discovered until 2010, by Mark Pecaut ...
The main rings are, working outward from the planet, C, B and A, with the Cassini Division, the largest gap, separating Rings B and A. Several fainter rings were discovered more recently. The D Ring is exceedingly faint and closest to the planet. The narrow F Ring is just outside the A Ring. Beyond that are two far fainter rings named G and E.
10199 Chariklo / ˈ k ær ə k l oʊ / is the largest confirmed centaur, a class of minor planet in the outer Solar System.It orbits the Sun between Saturn and Uranus, grazing the orbit of Uranus.
The rings have a reddish colour in visible and near-infrared light. The age of the ring system is unknown, possibly dating back to Jupiter's formation. At least 95 moons orbit the planet; the four largest moons—Io, Europa, Ganymede, and Callisto—orbit within the magnetosphere, and were discovered by Galileo Galilei in 1610.
The Q2R ring's location coincides with Quaoar's 5:7 spin-orbit resonance at 2,525 ± 58 km (1,569 ± 36 mi). Compared to Q1R, the Q2R ring appears relatively uniform with a radial width of 10 km (6.2 mi). With an optical depth of 0.004, the Q2R ring is very tenuous and its opacity is comparable to the least dense part of the Q1R ring. [13]
Researchers have identified the biggest ever solar storm – when the sun emits huge bursts of energy – using ancient tree rings. The event happened 14,300 years ago, according to the analysis ...
The ζ ring was observed again during the ring plane-crossing event in 2007 when it became the brightest feature of the ring system, outshining all other rings combined. [19] The equivalent optical depth of this ring is near 1 km (0.6 km for the inward extension), while the normal optical depth is again less than 10 −3 . [ 3 ]