http://www.stariel.com/blog/wp-content/uploads/2008/12/Saturn.jpg
is what I'm assuming you're referring to.
that's Saturn.
other planets have ring systems too, but no where near as obvious as saturns (or as pretty)
http://en.wikipedia.org/wiki/Rings_of_Jupiter
here is another useful page referring to jupiters rings.
Saturn was the first planet discovered to have rings. They were first observed by Galileo Galilei in 1610 through his telescope.
they were discovered 17 days after the planet itself was discovered.
Jupiter
Saturn!
The rings of Uranus were discovered in 1977 when the planet occulted a distant star. This event allowed astronomers to observe a series of fading and brightening of the star's light, indicating the presence of rings around Uranus.
Saturn was the first planet discovered to have rings.
In 1977, the first rings around Uranus were discovered during observations when the planet passed in front of a distant star, blocking its light. This event allowed astronomers to detect the rings that were backlit by the star's light.
Uranus has five main rings that are visible from Earth. These rings were discovered by the Voyager 2 spacecraft in 1986.
Uranus is the planet that has 11 rings and 27 moons. Its rings were first discovered in 1977, and its moons were discovered throughout the 18th and 19th centuries, with more recent discoveries made by the Voyager 2 spacecraft in 1986.
Saturn was discovered in Pisa, Italy by Galileo Galilei in 1610. Galileo also observed and discovered Saturn's Rings
It is top classified information that only the government and the NASA association can now about it
He Discovered The Jovian Planets ,i.e., jupiter, saturn, neptune and uranus