Rings Node Toolkits
This is a set of downloadable software tools developed at the PDS Rings Node. They enable users to perform a variety of common tasks related to planning ring observations, analyzing data, or carrying out dynamical calculations.
The rings of Saturn are a series of planetary rings that orbit the planetSaturn. They consist largely of ice and dust.
Altitude bearings
Wooden pattern was made in May for altitude bearings. Single pattern could be used for both sides because diameter piece can be flipped around:
Then we started to try to cast them at Doug's "foundry": ...
Saturn's beautiful rings -- including some faint rings never seen before -- show off in this recent view from the Cassini spacecraft. In the image, the Sun is behind Saturn, so we see the planet's nightside.
Though they look continuous from the Earth, the rings are actually composed of innumerable small particles each in an independent orbit. They range in size from a centimeter or so to several meters. A few kilometer-sized objects are also likely.
Planet Rings Each of the four giant gas planets in the outer Solar System is orbited by rings of dust and small particles of matter. Saturn is famous for its rings.
Rings. Neptune's system of narrow rings (Figure 56), which may be a relatively new addition to the planet's family, displays a quite unusual feature.
Rings in False Color
The 9 main rings of are visible here as horizontal lines. The somewhat fainter, pastel lines seen between the rings are artifacts of computer enhancement.
RINGS
Saturn's beautiful rings are only visible from Earth using a telescope. They were first observed by Galileo in 1610 (using his 20-power telescope).
Ringscape In Color
Nine days before it entered orbit, Cassini spacecraft captured this exquisite natural color view of Saturn's rings.
Rings of Saturn
Orbit and Rotation
The average distance between Saturn and the Sun is over 1 400 000 000 km (9 AU). With an average orbital speed of 9.
The rings of Uranus (and some of its moons) are shown in the adjacent Hubble Space Telescope image.
The rings are enormous. From one edge to the other, they span a distance equivalent to two-thirds of the gulf between Earth and the Moon.
URANUS' RINGS
Uranus and its rings photographed by an infrared camera.
Uranus has a belt of 11 faint, narrow rings composed of rock and dust. They circle Uranus is very elliptical orbits.
Saturn's rings were likely caused by the giant planet stripping ice from a Titan-sized moon. Image: NASA/JPL/Space Science Institute.
Saturn's Rings
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Go to Imagine the Universe! (A site for ages 14 and up.) ...
How did the rings form? Some scientists believe the rings are dust and particles that were thrown into space around Saturn when something hit the surface of the planet.
When you look at Saturn, you should be able to see a gap in the rings. This is called the Cassini division, after its discoverer. The group of rings on the outside of this gap is called the A ring.
RINGS
Saturn's best-known feature is its spectacular ring system. Because the rings lie in the equatorial plane, their appearance (as seen from Earth) changes in a seasonal manner, as shown in Figure 12.1.
Rings
Mark Showalter,
ESA, NASA -- larger image and fact sheet
The planet has a set of very faint rings composed of black dust particles as well as large boulders up to 10 meters (or yards) across.
Rings of Uranus
In 1977, while recording the occultation of a star behind the planet, the American astronomer James L. Elliot discovered the presence of five rings encircling the equator of Uranus.
Rings
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Rings
An image of Uranus in October 1998, taken by the Hubble Space Telescope. This near-infrared image shows the rings and clouds in Uranus' atmosphere. The cloud systems circle the planet at more than 300 mph (500 km/h).
Rings
SATURN'S RINGS
IN FALSE COLOR
Jupiter's equatorial dust rings can be detected at close range in visible light and from Earth in the infrared. They show up best when viewed from behind, in forward scattered sunlight.
Earrings are jewellery attached to the ear through a body piercing in the earlobe or some other external part of the ear . Earrings are worn by both sexes....
s, belts
Belt (clothing) ...
Saturns Rings
The rings of Saturn are made up of icy particles ranging in size from micrometres to metres. Almost entirely water ice, the particles are contaminated with some dust and other chemicals.
[P88] = Superstrings and the Search for a Theory of Everything, David Peat, Contemporary Books (1988)
[S92] = Explanatory Supplement to the Astronomical Almanac, P. Seidelman, University Science Books, Mill Valley (1992) ...
Rings Â- Great Dark Spot Â- Trojans Â- Moons
Discovery
John Couch Adams Â- Johann Gottfried Galle Â- Heinrich d'Arrest Â- William Lassell Â- Urbain Le Verrier ...
RINGS
Many planets are orbited by rings of rock, ice and/or dust. Saturn, Jupiter, Uranus, and Neptune have rings.
Planet Roche Limit (km) Roche Limit (miles)
Earth ...
The rings were probably formed relatively recently - several thousand years ago - when two of Saturn's satellites crashed together.
The rings of Jupiter, Saturn, Uranus and Neptune are a creation of their Roche limits. Except for Saturn's G and E rings which non-gravitational forces may maintain, the gaseous planets' rings lie within their respective Roche limits.
The rings of Jupiter are designated halo, main, and gossamer. Jupiter's four largest ( ) satellites, , , , and can be seen easily through a telescope.
The rings of Saturn are very big and are about 30 m(98 feet) thick, that consist of thousands of seperate bands with different densities within the main rings which are named A, B, C, D, E, and the very thin ring of F.
Why rings? Imagine an orbiting moon made of a (non-evaporating) liquid. Two forces act on it.
The rings measure 270,000 kilometers (170,000 miles) from side to side, over twice the width of the planet itself. Yet they are no more than a few hundred meters thick.
The rings of Saturn appeared to the Voyagers as a dazzling necklace of 10,000 strands.
The rings can be viewed using a quite modest modern telescope or with good binoculars.
The rings, especially the thin outer ones, are kept in tidy order by Shepherd Satellites. These are small satellites that are found near thin ring sections that use their gravitational pull to keep the particles in the rings in their places.
Saturn's rings are made of ice chunks and there is one at least on of Saturn's moons or moonlets in each ring. Some of the chunks of ice are as old as Saturn, while others crash into each other, break apart, and then reform repeatedly each year.
Saturn's rings are extraordinarily thin: though they're 250,000 km or more in diameter they're less than one kilometer thick.
Uranus has rings, and there are 27 moons orbiting this planet.
Uranus is the coldest planet in the Solar System.
Voyager 2 visited Uranus on January 24, 1986.
Planetary Rings Glossary -- Prepared by NASA Ames Research Center and the Center for Radar Astronomy at Stanford University as part of the Planetary Rings Node of the Planetary Data System.
PLANETARY RINGS - Rings composed of relatively small particles (from a few cm to a few 100 m across). All jovian planets in the solar system have rings.
LINKS AND WEBRINGS
Space Wander Virtual Space Trip
Travel to Mars using this original and entertaining site that is well worth a visit. If you have a broadband connection then it is a must.
Inner rings - see Buta and de Vaucouleurs 1983 ApJ 266,1 and references therein. These are statistically useful, but not competitive with other methods - not least because most galaxies don't have these structures.
Its Moons and Rings
At least 39 natural satellites are known to orbit Jupiter. They are conveniently divided into three groups.
Does Neptune have rings?
What moons does Neptune have?
What is the temperature of Neptune?
What is Neptune like?
What is Neptune made of?
How big is Neptune?
How was Neptune discovered?
How long does it take for Neptune to go around the sun?
Neptune has six rings which circle the planet.
Moons:
Neptune has eight moons that we know of. Because Neptune is so far away, it is difficult to see any of these worlds.
In addition to its rings, Uranus has 21 satellites; 15 revolve about its equator and move with the planet in an east-west direction. The two largest moons, Oberon and Titania, were discovered by Herschel in 1787.
1610 - Galileo Galilei sees Saturn's planetary rings but does not recognize that they are rings
1619 - Johannes Kepler states his third empirical law of planetary motion
1655 - Giovanni Cassini discovers Jupiter's great red spot ...
Saturn Model (PDF, 180 KB): Participants create a model of Saturn using discarded CDs; they are then able to contemplate Saturn's rings using the fact sheet Why Does Saturn Have Rings?
Grade Level: 5-8 ...
In most renderings of the constellation, Aldebaran makes the celestial Bull's eye.
4 " The central Airy diffraction disk is often visible but substantially blurred or distorted; short arcs of diffraction rings briefly seen on brighter stars.
A long focal length also helps to stops chromatic aberration, a "defect" found in all lenses producing false rings of color. When light is bent through a lens, the different wavelengths of light (the different colors) do not bend equally.
In physical science, coronae (or "glories") are the coloured rings frequently seen closely encircling the sun or moon. Formerly classified by the ancient Greeks with halos, rainbows, &c.
Infrared images also give us a more detailed view of their clouds and rings. In the infrared image of Uranus shown below (left), the different colors represent different altitudes in atmosphere.
cosmic string Cosmic strings are thin strands of ultrahigh density matter that are predicted by some theories to have been left over from an extremely early era of the universe.
If the file contains completely random strings, for example "XFNO2ZPAQB4Y", then it's difficult to get any compression out of it.
It is surrounded by several fine diffraction rings like the rings around the bull's-eye of a target. The size of the Airy disk, given approximately in radians by 1.
(AU stands for "Astronomical Unit" -- the mean distance between Earth and the Sun -- about 93,000,000 miles or 150,000,000 kilometers.) Second, the rings are almost as wide open as they can get.
 See also: Earth, Planet, Light, Time, Sun
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