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Saturn's Ring System
The rings of Saturn have puzzled astronomers ever since they were discovered by Galileo in 1610, during the first telescopic observations of the night sky. The puzzles have only increased since Voyagers 1 and 2 imaged the ring system extensively in 1980 and 1981.

Saturn, the ringed planet
Saturn, the large gas giant beyond Jupiter and sixth planet from the Sun, is one of the five (Mercury, Venus, Mars and Jupiter) planets visible from Earth using only the naked-eye.

Way out beyond Jupiter is the second of the gas giants, Saturn.
When Galileo focused his telescope on Saturn he was puzzled to find that it had an irregular shape.

Saturn's Rings
By Brian Ventrudo
More than a few stargazers got their start with a first look at Saturn through a telescope. The planet is simply a beautiful object.

Saturn eclipses an icy moon
The mighty planet Saturn is circled by a fleet of moons, each as different from the other as individual people. And as weird and alien as it seems, this Saturnian system of planet and moons have some similarities to our own Earth and Moon.

~ as seen by Hubble ©NASA and The Hubble Heritage Team (STScI/AURA) ~ is probably the best known and most beautiful planet in the solar system.

Here is a planet that everyone knows something about. Nearly anyone who has spent some time in school can recognize its because of its rings, but what else do you know about the ~ian world? Do you know for instance what those famous rings are made of?

~'s New Moons
Many new ~ian moons are now confirmed; the pre-2000 reports are probably in error. More recent discoveries can be seen here. And more discoveries are expected from Cassini, now in orbit around ~.
Cassini ...

~s Smaller Moons
Last week, we looked at the largest gem in ~s vast collection satellite treasures, Titan. This week, we will look at other, smaller in the ~ian system.

~ has many moons (62 discovered as of 2012). The moons are: Titan, Rhea, Iapetus, Dione, Tethys, Enceladus, Mimas, Hyperion; Prometheus, Pandora (shepherd moons), Phoebe, Janus, Epimetheus, Helene, Telesto, Calypso, Atlas, Pan, Ymir, Paaliaq, Siarnaq, Tarvos, Kiviuq, Ijiraq, ...

~'s Rings
Return to the StarChild Main Page
Go to Imagine the Universe! (A site for ages 14 and up.) ...

~'s hexagon emerges from winter darkness
Posted: December 10, 2009 ...

~'s North Pole Cloud Pattern Hexagon
A persisting hexagonal wave pattern around the north polar vortex in the atmosphere at about 78°N was first noted in the Voyager images.

~ (astronomy) at HighBeam Research
~ (astronomy) on Wikipedia
Pictures from Google Image Search ...

Do ~'s moons cast observable shadows on ~?
I've seen the tiny black shadows cast by Jupiter's moons. Do ~'s moons cast observable shadows on that planet?

~ is the _______________________ planet from the Sun in our Solar System. It is the second-largest _______________________ in our Solar System (Jupiter is the largest) and is made mostly of _______________________ and helium gas (it is a _______________________ planet).

A highly oblate whose atmosphere is hydrogen and helium. The predominant condensable aerosols are methane, ammonia, hydrogen sulfide, and water. In order of decreasing condensation height (as well as saturation vapor pressure), the condensable gases are CH4, NH3, NH4SH NH3H2S, and H2O.

~'s Moons
~ has 31 known moons. Of them, Titan is the largest, and is the second-largest in our solar system (Jupiter's Ganymede is largest). The other satellites have icy surfaces and many craters. Mimas has one crater that spans one quarter of it's diameter.

~ means:
~ was the god of agriculture, he was called Cronus by the Greeks. He is the son of Uranus, and father of Jupiter. ~ over threw his father to become king of the gods, but was then over thrown himself by his son Jupiter.

~ transits - or passes in front of - the Crab Nebula on the evening of January 4. Afterwards, ~ slowly drifts westward (left to right) through Taurus, staying within vicinity of the Crab Nebula throughout the month.

~ advertises itself as "a different kind of car company" although it is actually a division of General Motors. ~ prides itself on dealerships that feature the "~ Difference," which means, among other things, no-haggle pricing.

~ has 34 named moons, among them Titan, about the size of Jupiter's Ganymede, both larger than the planet Mercury.

~'s renowned rings appear to be mostly made of small particles of water ice, some of which may be coating rocky particles.

Wikipedia, the free encyclopedia - Cite This Source
~ is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter.

~'s other Moons
~'s other moons have icy surfaces that are very cold so that ice is as rigid as rock and craters form from meteor impacts. The mean densities of these moons are 1.0 to 1.5 g/cc, implying that they are probably mostly ice, though they may have some rocky consituents.

Planet ~ Moons: Mundilfari
Mundilfari is a moon of the planet ~.
For a listing of other moons, see Moons of the planets.

~ has 61 moons with confirmed orbits, 52 of which have names, and most of which are quite small. There are also hundreds of known "moonlets" embedded within ~'s rings.

~'s Moons
and two of its moons, and , were photographed by Voyager 1 at a distance of 13 million km (8 million mi). The shadows of ~'s three bright rings are cast onto the cloud tops.

~ is the sixth planet from the sun. Image Credit: NASA
~ is a funny-looking planet. True, it's not the only planet with rings. Jupiter, Uranus and Neptune have rings, too. But ~'s rings are the biggest and brightest.

~ Controls a Giant Planetary System

~ also has a slightly slower rotation rate than Jupiter, but it is still going fast and has differential rotation just like Jupiter, so there are some spots and storms, though they aren't as easy to see.

*~ is one of the 5 planets visible with the naked eye, but for astronomy purposes a good set of binoculars of 25x is the minimum requirement for viewing ~ and its yellow colour.

A view of ~ as it is approached by the Cassini spacecraft.
Some basic facts about ~
Planet ...

Venus and ~ will pair up in the western sky on the evening of June 30th.
The planets will pass 41' apart around 9 P.M. EDT (01:00 UT, July 1st).
Venus will shine at magnitude -4.4; ~ will glow at magnitude +0.6.
The Venus-~ conjunction takes place 42.6° from the Sun.

~ has intrigued man for centuries, especially since the invention of the telescope when the ~'s grand rings were observed for the first time. Much like Jupiter, ~ has many dozens of moons, one of which, Enceladus, could provide a foot-hold for life to form.

~ Nebula (NGC7009) in Aquarius
(RA 21h 04.2m , Dec. -11°22', 8.3 mag., >25" in diameter) ...

~ is the sixth planet and the second jovian giant. ~ is 120,000 km (75,000 miles) across and about 95 times Earth's mass, one day lasts 10 hours 15 minutes. The atmospheres composition is 94 percent Hydrogen, and the rest is helium with traces of ammonia, methane,and other gases.

~ Storm
Such spots are relatively rare on ~. The previous one visible from Earth appeared in 1933, but it was much smaller than the 1990 system and much shorter lived, lasting for only a few weeks. Another storm system is visible in Figure 12.2, taken in 1994.

~: ~ is the second largest planet in our solar system, the sixth planet from the Sun and features an impressive system of rings.

~ is the sixth planet from the Sun. It is the second-largest planet in our solar system. It is best known for its distinctive rings, which are made of ice chunks that range in size from the size of a fingernail to the size of a car.

~ is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. ~, along with Jupiter, Uranus and Neptune, is classified as a gas giant....
(e.g. Europa
Europa (moon) ...

~, the farthest planet easily visible to the unaided eye, is known for its extensive, complex system of rings, which are very impressive even in a small telescope. Using a small telescope one can also discern the planet's oblateness, or flattening at the poles.

~s Rings

The rings of ~ 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.

~ Nebula (NGC 7009, Caldwell 55)
~ Nebula, photo: Spacetelescope.org, NASA/ESA
The ~ Nebula was discovered by Sir William Herschel in the late 18th century. It got its name from the English astronomer and telescope maker William Parsons, 3rd Earl of Rosse, in the 19th century.

The spectacular aggregation of countless billions of small rocky and icy particles that surround and orbit ~ in its equatorial plane. Three main rings can be seen even in small telescopes from Earth.

~ (1/4) and Neptune (3/4):
Fold the tape back in half, then in half again. Fractions: 1/4th and 3/4th. Unfold and lay flat. What planets do you think are at these points? Draw a circle a little bigger than a quarter on the 1/4th mark (closer to the Sun) and label it ~.

Sub-~ Planet Candidates to HD 16141 and HD 46375.
Dec. 20, 2010 MARCY G., BUTLER P. & VOGT S.
ApJ. Letters, 536, L43
paper ...

~'s largest satellite is the mysterious world called Titan. It has slightly greater diameter, density, and mass than Callisto. It is probably half rock, half ice. What is special about Titan is that it has a thick atmosphere with a surface air pressure about 1.5 times thicker than the Earth's.

~ with its fantastic rings is about 1 light hour from the Sun. These are "false color" image from Voyager. ~'s large satellite Titan is massive enough to have its own atmosphere, though probably too cold to support life.

The sixth planet in the solar system, noted for its obvious ring structure. ~ is almost ten times the Earth's distance from the Sun. The planet completes a circuit around the Sun in about 30 Earth years. ~ is the second largest and the least dense planet in our solar system.

~ - Variable projection.
Pythagoras - Prime focus
Pythagoras - Variable projection
Images with 10 inch f/10 LX200 ...

~'s largest moon Titan was seen as a strange world with its dense atmosphere and variety of hydrocarbons that slowly fall upon seas of ethane and methane.

~'s most well known feature is its rings. These rings are made up of dust and rocks covered with ice. That is the same type of material found in comets. Scientists think the rings could have been formed from a comet striking one of ~'s moons.

In ~'s rings, the gap between rings B and C. [H76]
see Vega [H76]
Lyrae Stars ...

The ~ Handbook, Julius Benton, Association of Lunar and Planetary Observers (A.L.P.O.).
The Solar System, Volume III: Planets and Satellites, Audouin Dollfus (Observatoire de Paris), Chapter 15 - Visual and Photographic Studies of Planets at the Pic du Midi, University of Chicago, 1961.

~'s outermost ring, the subdivided "F" ring, has many visible knots or clumps of matter. These knots may be clumps of particulate ring material or tiny orbiting moons of ~.

Jupiter, ~, Uranus, and Neptune.
giant star - (n.)
A type of star brighter than main sequence stars of the same spectral type.

May 10 - ~ at Opposition. The ringed planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. This is the best time to view and photograph ~ and its moons.

Cerca de ~o
El Voyager 1 de los EE.UU, envía a Tierra las primeras imágenes de ~o y sus anillos.
1986 A.C.

NGC 7009, "~ Nebula" is a planetary nebula quite spectacular in large instruments. It has 'rays' which extend from both sides of the main disc. The nebula is 1º west of nu Aqr. Burnham (p. 190) has a location chart.

Movie of a ~ Apollo Launch: (.mov) or (.avi). (587K)
The Manned Flights of Apollo
Apollo 7 ~ 1B October 11-12, 1968 Walter M. Schirra, Jr. Donn F. Eisele R. Walter Cunningham ...

JUPITER and ~: Jupiter radiates about 1.6 times as much heat, in the form of infrared energy, as it receives from the Sun. This indicates that Jupiter has an internal source of energy - probably heat created by Jupiter's collapse when it was formed.

~ (NASA SP-7, 1965) See planet, table. ~ 5 launch vehicles (From Stargazers to Starships Glossary - GSFC) The biggest rocket built to date, weighing 2700 tons fully loaded. It was used to launch NASA's Moon mission and the Skylab space station.

A 5000-km gap in ~'s ring system observable through small telescopes. G.D. Cassini discovered this dark gap in ~'s rings in 1675.
celestial equator ...

"Appendages" on ~
Galileo noted two appendages from the sides of ~. These disappeared then later reappeared. It was not until 1656 that the Dutch scientist, Christiaan Huygens correctly described them as rings.
Stars in the Milky Way ...

Me: So, did you see ~ last night?
Him: No, it was too cold out to go observing.
Me: Oh.
Him: But my 18" dob blows your puny little 2.7" refractor out of the water, you teeny dweeb! ...

The UV radiation produced in the upper atmosphere of Jupiter, ~, Uranus by high-energy particles in the planet's magnetosphere.
Electromagnetic Radiation ...

1980 - ~ - Success - Voyager 1 sends back images of ~ and its system
1980 - Success - Launch of the Solar Maximum Mission satellite
1981 - Venus - Success - Venera 13 launched, it returned the first colour pictures of the surface of Venus ...

Cassini division 5000-kilometer gap between the outer and middle rings of ~. celestial equator great circle that represents the projection of Earth's equator onto the sky (celestial sphere).

NGC 7009 displays a pair of jug-handle-like "ansae" that give it the name "The ~ Nebula." On the left is a drawing made early in the twentieth century from a series of primitive photographs, the gaseous nebula perhaps appearing as its discoverer William Herschel may have seen it.

For it resemblance with the planet ~ it is called ~ Nebula: in larger scopes it appears as a bright inner ring surrounded by a patchy disk. Small scopes show a misty greenish disk of 8th mag.

The box shows the picture of happy people looking through the telescope and then a few colorful Hubble quality shots of some planets (Jupiter, ~, Mars) or of Andromeda galaxy.

The largest, Jupiter, is 318 time Earth's mass, while ~, Uranus, and Neptune are respectively 95, 15, and 17 times Earth's mass. In terms circumference, these four planets are 11.2, 9.5, 4.0, and 3.9 times Earth's circumference.

Cassini's division the major division in ~'s rings, between the A- and B-rings celestial equator the Earth's equator projected onto the sky celestial object an object in space which appears in Earth's sky celestial poles the Earth's north and south poles projected onto the sky ...

Perturbations from other planets (primarily ~) cause the Trojans to oscillate around L4 and L5 by 15-20° and inclinations up to 40° to the orbital plane. These oscillations generally take 150-200 years to complete.

The RA of the "giant planets" (Jupiter, ~, Uranus and Neptune) changes very, very slowly. Therefore the Earth's sidereal period becomes a dominant factor. The further away the planet, the closer its synodic period approaches the Earth's sidereal period.

But five unusually bright stars - Mercury, Venus, Mars, Jupiter and ~ behaved differently. Within a single night they would remain in a fixed position relative to the other stars.

I love it when ~ is up during a star party. I love being the guy who shows someone ~ through a telescope for the first time, their reactions are always the same: "WOW! LOOK AT THAT! MAN, THAT'S AWESOME! OH MAN THAT'S COOL! ...

This large size difference is responsible for many other differences between the two groups, for instance Jupiter and ~ both have sufficiently high internal pressures to 'squeeze' large quantities of Hydrogen into a metallic state in their cores, ...

This model generally led to reasonable predictions of planetary positions, but it has several unexplained coincidences: the centers of the epicycles for Mercury and Venus always line up with the position of the Sun, and the lines from the epicycle center to the planet for Mars, Jupiter and ~ ...

For example, ~ has a specify gravity, or density, of 0.71. Therefore an equal volume of water would weigh more than the planet - if you had a big enough bowl of water, ~ would float in it! On the other hand, Earth has a specific gravity of 5.5, thus Earth would weigh 5.

After the Sun, the next largest bodies in the solar system are the so-called ``gas giant'' planets, Jupiter, ~, Uranus and Neptune. Of these Jupiter is the largest and most massive.

Originally a description of the appearance of ~'s rings before they were recognised as being a ring system.

Ptolemy believed the planets and Sun to orbit the Earth in the order Mercury, Venus, Sun, Mars, Jupiter, ~.

NGC 7009, or the ~ Nebula, is one of the brightest planetary nebulae, named after the planet ~ because it is similar in shape. NGC 7293, or the Helix Nebula, is the closest planetary nebula to Earth, only 400 light-years away.

A spacecraft en route to ~, scheduled to arrive in 2004. Named after the astronomer who discovered the dark gap between the two main rings of ~.

celestial body
Any object beyond the Earth and visible in the sky.

Within the Solar System, the average temperature on Pluto is around -235°C, on Neptune around -220°C, on Uranus -210°C, on ~ -184°C and on Jupiter -153°C. The temperature on Mars varies between about -87°C and -5°C, with an average of around -46°C.

They are in the order as they appear moving towards from the sun, Mercury, Venus, Earth, Mars, Jupiter, ~, Uranus, Neptune, Pluto.

Notable Features: ~ Nebula is one of the brightest planetary nebulae in the sky. It was named the ~ Nebula because when observed with larger telescopes its shape resembles that of the planet ~.

Mercury Venus Earth Mars Jupiter ~ Uranus Neptune or (My Very Evil Mom Just...
what planets in our solar system have a lot of asteroids?
Asteroids can be most found in orbit around the sun. Asteroids sometimes...

The star is now surrounded by a glowing nebula that makes viewing difficult but Eta Carinae appears to be one of the largest stars we know about, perhaps larger than the orbit of ~. Astronomers feel that Eta Carinae is very unstable and may soon become a supernova.

The most prominent gap in ~'s rings.
An early scientific school which held that most features of nature formed in sudden events, or catastrophes, instead of by slow processes.

outer planet ((astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, ~, Uranus, Neptune, Pluto)) ...

The planets of the Solar System: Mercury, Venus, Earth, Mars, Jupiter, ~, Uranus, Neptune (not to scale).
Credit: Courtesy NASA/JPL-Caltech.
Extrasolar planets orbit stars beyond our own Solar System. There are over 450 extrasolar planets now known.

Evening observers this July can enjoy wonderful views of Mars and ~, which offer a nice contrast in both color and telescopic appearance. The outermost planets, Uranus and Neptune, take center stage after midnight.

Giant planets - Jupiter, ~, Uranus, and Neptune.
Gibbous moon - the phases between half moon and full moon.
Great Red Spot - Thel large red storm going around like a tornado on Jupiter.

Enterprise was nominated for five individual ~ Awards, won an ASCAP Award in 2002 for "Top TV Series", was nominated for seventeen Emmy Awards, winning four, and two episodes were nominated for Hugo Awards.

B ring
One of three prominent rings encircling ~.
Big Bang
An explosion of all space that took place roughly 15 billion years ago and from which the universe emerged.

During this period Zach enlisted 24 astronomers throughout Europe in making a systematic search for new comets and for the planet between Mars and ~ expected on the basis of Bode's law (the Titius-Bode law). The principal result was the discovery of several asteroids.

See also: See also: What is the meaning of Astro, Planet, Astronomy, Earth, Astronomer?

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