Cassini division


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Cassini division
The black band in the center of this close-up view of Saturn's rings is the
Cassini division.

Cas·si·ni division

 (kə-sē′nē)
n.
The large gap between the two most prominent of Saturn's rings, caused by the gravitational pull of the moon Mimas.

[After Giovanni Domenico Cassini (1625-1712), Italian astronomer.]

Cas•si′ni divi`sion

(kəˈsi ni, kɑ-)
n.
a 3000-mi. (4800-km)-wide dark region between the middle and outermost rings of Saturn.
[1905–10; after Giovanni Domenico Cassini (1625–1712), Italian astronomer who discovered it in 1675]
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References in periodicals archive ?
Since the rings are tilted wide open to our view this year, the Cassini Division should be very evident between the outer A ring and the broader B ring.
Between the A ring and the B ring we find the Cassini division, an almost empty area that separates the two rings and appears as a dark lane between them.
With sufficient aperture and good seeing, the Cassini Division appeared black and could be observed all around the ring system, except where it lay behind the planet or was hidden by the globe shadow on the rings.
These ringlets showed up in the Cassini Division, a large gap between Saturn's third and fourth main rings.
Among his chief works are the Fall Revolution Series which consists of The Star Fraction (1995), The Stone Canal (1996), The Cassini Division (1998), and The Sky Road (1999).
In a quartet of novels--The Star Fraction (1995), The Stone Canal (1996), The Cassini Division (1998), and The Sky Road (1999)--MacLeod sets up several societies then lets them loose in something akin to the real world, where they can compete, infiltrate each other, and try to come to terms with their internal contradictions.
6- or 3-inch scope should reveal the rings easily, and the dark Cassini Division between the A and B rings with a little more effort.
The large gap between rings B and A is called the Cassini division.
In fact, the Cassini Division (named for Jean-Dominique Cassini, who discovered it in 1675) is full of interesting features--including eight narrow gaps that really are empty.
There's more material in the Cassini division of Saturn's rings [which appears virtually empty to earth-based observations] than in the entire Uranian ring system," says Terrile.
The smallest astronomical telescope should reveal the rings easily and the dark Cassini Division between the A and B rings with a little more effort.