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A ring system is a disc or torus orbiting an astronomical object that is composed of solid material such as gas, dust, meteoroids, planetoids or moonlets and stellar objects. Ring systems are best known as planetary rings, common components of satellite systems around giant planets such as of Saturn, or circumplanetary disks.
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not then recognized as such. The first confirmation of the detection occurred in 1992. A different planet, first detected in 1988, was confirmed in 2003.
An updated image of Uranus' rings system (the epsilon/ε, zeta/ζ, mu/μ and nu/ν rings are annotated) as imaged by the James Webb Space Telescope's near-infrared camera on September 4, 2023. The rings of Uranus are intermediate in complexity between the more extensive set around Saturn and the simpler systems around Jupiter and Neptune.
A pair of Voyager 2 images of Neptune's ring system. The first mention of rings around Neptune dates back to 1846 when William Lassell, the discoverer of Neptune's largest moon, Triton, thought he had seen a ring around the planet. [2] However, his claim was never confirmed and it is likely that it was an observational artifact.
List of directly imaged exoplanets. Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light ...
Fomalhaut b, formally named Dagon ( / ˈdeɪɡən / ), [ 2] is a former candidate planet observed near the A-type main-sequence star Fomalhaut, approximately 25 light-years away in the constellation of Piscis Austrinus. The object's discovery was initially announced in 2008 and confirmed in 2012 via images taken with the Advanced Camera for ...
A schema of Jupiter's ring system showing the four main components. For simplicity, Metis and Adrastea are depicted as sharing their orbit. (In reality, Metis is very slightly closer to Jupiter.) The planet Jupiter has a system of faint planetary rings. The Jovian rings were the third ring system to be discovered in the Solar System, after ...
Rings of Chariklo. The minor planet and centaur 10199 Chariklo, with a diameter of about 250 kilometres (160 mi), is the second-smallest celestial object with confirmed rings (with 2060 Chiron being the smallest [1]) and the fifth ringed celestial object discovered in the Solar System, after the gas giants and ice giants. [2] Orbiting Chariklo ...