The phrase "ringed planet" refers to a planet that has rings made up of icy or rocky material surrounding it. One famous example is Saturn, which has large and beautiful rings encircling it. Full definition
Skywatchers in the UK and Western Europe should cast their gaze low in the southern sky late into the evening of Thursday 6 July to see the 12 - day - old waxing gibbous Moon in conjunction with ringed planet Saturn. (astronomynow.com)
As the Cassini spacecraft plunges toward its death on Saturn, the world's knowledge of the famous ringed planet continues to accumulate. (sciencenews.org)
A massive ringed planet and a swarm of asteroids may instead explain Tabby's star (newscientist.com)