Ring system
A ring system is comprised of rings of dust and other small particles orbiting around a planet in a flat disc-shaped region.

In 2152, the  engaged the Klingon D5 class battle cruiser  in the ring system of a gas giant. ()

The planet Terralysium had a complex system of interwoven ring systems, each composed of unique radioactive particles. In 2257 the outermost ring destabilized and threatened to unleash a nuclear winter on the planet, but the debris was captured and redirected away by the . ()

In 2371, the crew of the  discovered a new element in the ring system of a class D planet in the Delta Quadrant. ()

The rings of  had special metaphasic properties that stopped the aging process for the inhabitants, the Ba'ku. In 2375, the Son'a, with the help of Starfleet Admiral Dougherty, attempted to collect the radiation for their own purposes, which would leave the planet uninhabitable. However, Captain Picard and the  were able to stop them before they could enact their plan. ()

In 2380, the fifth moon of Mixtus III was destroyed by the  and  after its orbit became unstable, and formed a new ring system around the planet. ()

Planets with planetary rings

 
 Camus II (remastered)
 Casperia Prime
 Dannus V
 Finibus IV
 Gamma II (remastered)
 Gravesworld
 Idlocana VI (fictional)
 Kaminar
 Jupiter
 Mariposa
 Mixtus III (following the demolition of its fifth moon in 2380)
 Mudd (remastered)
 Neptune
 Persephone II
 Persephone IV
 Risa (mirror)
 Saturn
 Solum
 Talos III
 Tantalus V (remastered)
 Terralysium
 Theta Zeta
 Uranus
 Veridian II
 Veridian VI
 Yuri (Braslota II)
  (remastered)

Unnamed planets
 Gas giant planet (Star Trek: Voyager, opening credits)
 Gas giant planet near Klingon space ()
 Class D planet ()
 Class T gas giant ()
 Planet close to Starbase 11 planet ()
 Moon close to an unnamed planet where the monastery at P'Jem was located. ()
 Several moons of Matalas Prime ()
 Gas giant orbited by Andoria ()

External link
 

de:Planetenring
it:Pianeta con anelli
Astronomy