The giant planets
The giant planets all have only small solid cores which are surrounded by enormously thick layers of liquid forms of substances that on Earth we encounter as gases.
Giant planets that have a gaseous surface; the sun's known Jovian planets are Jupiter, Saturn, Uranus, and Neptune.
Julian Calendar ...
The giant planets have diameters greater than 48000 km.
The giant planets are sometimes also referred to as gas giants.
by position relative to the Sun: ...
The gas giant planets (Jupiter, Saturn, Uranus, and Neptune) formed further out, beyond the frost line, the point between the orbits of Mars and Jupiter where the material is cool enough for volatile icy compounds to remain solid.
The gas giant planets (Jupiter, Saturn, Uranus and Neptune) have many moons and thus frequently display eclipses.
The four giant planets beyond Mars (Jupiter, Saturn, Uranus, Neptune) are called the jovian planets because they are like Jupiter: large, mostly liquid worlds with thick atmospheres.
Like other giant planets, Saturn's atmospheric circulation is dominated by zonal (east-west) flow. When referenced to the rotation of the magnetic field, virtually all the flow is to the east--i.e., in the direction of rotation.
One of the giant planets in the outer solar system, Saturn contains enough material to build 95 Earths. Its diameter is 75,000 miles -- large enough to fit more than nine Earths across it. Yet for all its bulk, Saturn is a lightweight planet.
The four gas giant planets - especially Jupiter - played a major role in shaping our solar system.
"Like our own giant planets, Jupiter and Saturn, the planet is mostly made of hydrogen and helium," says team member Tristan Guillot, "and it may contain up to 20 Earth masses of other elements, ...
gas giant planets (NASA Thesaurus) The giant planets, Jupiter, Saturn, Uranus, and Neptune, of our solar system.
Outermost of the giant planets
Takes 165 Earth years to complete
one orbit around the Sun
Voyager 2 sent back photos in 1989 of a giant blue ball with winds racing along above the planet surface at speeds of nearly 700 mph (300 m/sec).
Why aren't the gas giant planets stars?
What are some substances not found on Earth, but found on other planets or comets?
Can you describe two or more aspects of the solar system that are not common knowledge?
It is predicted that masers exist in the atmospheres of giant planets, e.g. [6]. Such masers would be highly variable due to planetary rotation (10-hour period for Jovian planets).
Stellar atmospheres ...
Jovian planet (NASA SP-7, 1965) Any one on the giant planets: Jupiter, Saturn, Uranus, or Neptune. Usually in plural Jovian planets. JP (abbr) (NASA SP-7, 1965) = jet propulsion
Compare RP (abbr).
On January 8, 2007, astronomers using NASA's Spitzer Space Telescope announced their collection of evidence indicating that gas-giant planets either form within the first 10 million years of a Sol-type star's life, or not at all.
The RA of the "giant planets" (Jupiter, Saturn, Uranus and Neptune) changes very, very slowly. Therefore the Earth's sidereal period becomes a dominant factor.
Brown dwarfs belong to the "T dwarf" category of objects straddling the domain between stars and giant planets.
The two giant planets are quite similar in their bulk properties. The radius of Uranus is 4.0 times that of Earth; that of Neptune, 3.9 Earth radii.
In contrast to the gas giant planets there are the terrestrial planets in the inner part of the solar system, consisting of Mercury, Venus, Earth (and the Moon), and Mars. The terrestrial planets are characterized by higher densities (5.
Some planetesimals in the outer solar system became large enough to accrete gas forming the giant planets Juipter, Saturn, Uranus, and Neptune.
Uranus is the 3rd of the Gas Giant planets, and the first planet discovered in "modern" times (1781).
The research is based on surveys of stars with gas giant planets - similar to Jupiter and Saturn - that orbit far from their stars. As in our solar system, vast distances stretch between these stars and their gas giants.
They cross the orbits of one or more of the giant planets in their journey around the Sun, and interactions with these outer planets cause the orbits of Centaurs to be inherently unstable.
The discovery of many giant planets orbiting other stars shows us that planets -- at least Jupiter-like planets -- probably are common. There is little chance of life on such planets, though.
Moons surrounding the giant planets generally are not found where they originally formed because tidal forces from the planet can cause them to drift from their original locations.
These planetesimals were eventually either captured by Jupiter or another of the giant planets or ejected from the solar system.
Deep space communication antennas and receivers are capable of detecting many different kinds of natural emitters of electromagnetic radiation, including the stars, the sun, molecular clouds, and gas giant planets such as Jupiter.
"Yes, and when the seeing is great, I have difficulty leaving the giant planets. It is so impressive to look at detail at 800x magnification.
One can speak of classical (or historical) planets (those known before 1900), terrestrial planets (Mercury, Venus, Earth, Mars), gas-giant planets (Jupiter, Saturn, Uranus, Neptune), and “dwarf planets' (Ceres, Pluto, Charon, 2003 UB313).
Beyond the asteroid belt are the gas giant planets, Jupiter, Saturn, Uranus, and Neptune. These mostly-gaseous planets are far from the Sun and much larger than the inner planets. They are each orbited by systems of rings and many moons.
According to one widely accepted view, comets are as old as the solar system and are the remnants of the building blocks that produced the giant planets.
"The dusty disk around this star has a very large gap, which may have been carved by the formation of giant planets," said Casassus. "Outside the gap, this disk contains enough gas to make about a dozen Jupiter-sized planets.
Giant planets - Jupiter, Saturn, 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.
Once we turn to the giant planets, we jump to a length scale of tens of AU. Jupiter's semimajor axis is 5.20 AU, Saturn's is 9.54 AU, Uranus's is 19.19 AU, and Neptune's is 30.07. The Kuiper belt of planetoids ranges from 30 to 50 AU.
Research into the solar system, known as planetology or the planetary sciences, covers a diverse section of the sciences, with areas of study ranging between microscopic grains and the gas giant planets.
Uranus is the third largest planet. It is one of the gas giant planets.
The atmosphere of Uranus is made up of hydrogen, helium and methane. The methane absorbs red light making Uranus appear blue.
Space probes which have visited the giant planets--Jupiter, Saturn, Uranus and Neptune--found that all were magnetized, even more intensely than the Earth, and all were surrounded by radiation belts.
Three giant planets are seen to orbit, HR 8799: "d", "c", and "b" at average distances from the star of 24, 38, and 69 Astronomical Units.
Small objects formed near the giant planets would have been ejected from the solar system by gravitational encounters. Those that didn't escape entirely formed the distant Oort Cloud.
Occasionally, one of the icy objects in the Kuiper belt is disturbed by the gravitational forces of one of the gas giant planets, causing it to approach , which sometimes propels the small object into a new, very elliptical solar orbit, ...
They are called Jovian planets because of similarities in their composition and location. This group is also known as the "giant planets," the "gas planets" and, when grouped with the planet Pluto, the "outer planets." ...
However, ammonia -- common in the giant planets -- was not detected. In addition, radio observations of Titan set its temperature at 87 K, cold enough for liquid methane and ethane on the surface.
Giants can be of any color, but yellow, orange, and red giants are the most common. 2. A planet much more massive than Earth. The solar system has four giant planets, all far from the Sun: Jupiter, Saturn, Uranus, and Neptune. [C95] ...
It is the prototype for a new and previously unsuspected class of planet known as epistellar Jovians, or "hot Jupiters," with remarkably small orbits. The existence of giant planets very close to their host stars has led to the suggestion that ...
The value above implies only three kinds of leptons, fortunately allowed by the three known generations. Other nuclei provide better constraints on density, hence the excitement over looking for deuterium in the atmospheres of giant planets and in ...
 See also: Giant, Planet, Solar, Sun, Solar System
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