Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

Jupiter and Saturn look serene through a backyard telescope, but beneath and around their clouds, both worlds are in dramatic flux. Deep inside Jupiter, hydrogen is crushed into a strange liquid metal ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Left to right: Saturn, Uranus, and Jupiter show off their rings for various NASA spacecraft.

On March 4, 1979, NASA’s Voyager 1 spacecraft took the first photos of rings around Jupiter. This was the first time anyone had seen Jupiter’s rings. Because the rings are so thin and faint, it's ...

Since this past September, Saturn’s been the best planet to enjoy through even a small telescope, even though its ring system ...

Astronomers have detected a three-ringed structure in the nursery of planets in the inner planet-forming disk of a young star. This configuration suggests two Jupiter-mass planets are forming in the ...

Sky This Week is brought to you in part by Celestron. Friday, January 9Mars is in conjunction with the Sun at 7 A.M. EST, ...