Jupiter's rings

Jupiter's Ringsclick for a larger image
Jupiter's Rings

Jupiter's rings

A system of planetary rings composed of small rocky particles discovered around Jupiter in 1979 as the spacecraft Voyager 1 moved inside the orbit of the satellite Amalthea. There are three named rings: the vertically extended Halo Ring, the brighter Main Ring, and the tenuous Gossamer Ring (see table). Data from the Galileo probe showed that the Gossamer ring is actually two rings, one embedded within the other, composed of debris from Almathea and Thebe. The satellite Metis is embedded in the Main Ring, while Adrastea orbits close to its gradual outer boundary.
References in periodicals archive ?
He said Jupiter's rings are made up of particles about a thousandth of a millimeter in diameter each, while Neptune's rings are almost entirely made of dust.
By comparison, Jupiter's rings contain mostly small, micron-sized particles (a micron is a thousandth of a millimeter).
By comparison, Jupiter's rings contain mostly small, micron-sized particles, Neptune's rings are also mostly dust, and even Uranus has broad sheets of dust between its narrow main rings.
It was the year that, in the summer, schoolchildren looked to the heavens and wondered if the hobbled space station called Skylab would land on top of them during its operatic fall to Earth, and Voyager I photos showed Jupiter's rings.
Other 1979 events: Voyager 1 photo reveals Jupiter's rings. USSR invades Afghanistan.