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Jupiter is the 5th planet from the Sun. The planet is classed as a gas planet. Jupiter derives its name from the Roman god for King of Gods. Jupiter has been known for centuries ever since people looked to the stars and noticed a star moving across the sky.The mass of the object is 1898.6. The equatorial radius of the planet is 71492 whereas the volumetic mean radius is 69911. The Mean Density of the planet is 1326. The time the planet takes to revolve round the Sun is 4332.589 days or roughly 11.9 Earth Years. The length of a day on the planet is 9.9259 hours, i.e. the time it takes to revolve once on its axis. The average temperature of the planet is -165K/-108C. The surface pressure of the planet is >1000bars.

Jupiter is about 778600000.0km from the Sun. The Orbit Eccentricity is 0.0489, that is how much the orbit deviates from a circle, between 0 and 1. The Orbit Inclination is 1.304, that is how much the orbit deviates from a circle, between 0 and 1. The volume of Jupiter at the equator is 143128. The escape velocity, the speed which is need to break free is 59.5. The surface gravity of Jupiter is 0 compared to Earth which for purpose of this site is 1. The following gasses can be found in the Jupiter's atmosphere : Molecular hydrogen (H2) - 89.8% (2.0%); Helium (He) - 10.2% (2.0%). More information and the source for the moon can be found at N.A.S.A.

Jupiter is the daddy of the planets in the solar system. Jupiter is clearly the largest planet by a clear margin. The planet is a large gas giant with a possible rocky core but sending a probe to land on any rock that Jupiter might be hiding is nigh on impossible.. The planet Bespin from Star Wars - The Empire Strikes Back is closest anyone has portrayed an alien Jupiter. Although Bespin has an breathable atmosphere, Jupiter doesn`t have a breathable atmosphere. Any attempt at entering the atmosphere would be pure folly, the pressures of the atmosphere would crush any probe or spacecraft before it got into the atmosphere. Jupiter has a large number of moons including Europa with a possible thick ice covering which people say might contain life underneath. When you hear the term Jovian, it refers to the object being associated with the planet Jupiter.

In Jupiter Ascending, a humanoid race live inside Jupiter`s atmosphere. However this would be impossible due to the extreme pressures and temperatures of the atmosphere.


Between Mars and Jupiter is the asteroid belt, a large of area of space where planetoids and large rocks orbit the Sun. Some theorize that the asteroids are from a planet that had failed to form because of the immense gravitational power of Jupiter.

The large red spot on Jupiter is large enough to fit two or three planets in. It has been raging for hundreds even thousands of years and will continue to do so long after you`re have died.

If Jupiter didn`t exist, we might not have been here. Because of the sheer immense gravity that Jupiter exerts, it has been able to pull asteroids and comets that would have cause a mass extinction safely into its atmosphere and destroy it. The most recent being the Shoemaker-Levy 9 comet. The comet didn`t pose a threat to our survival but it illustrates the power of Jupiter. Whilst being a hero, Jupiter has been accused of throwing out a planet from our solar system.

Jupiter, a Failed Star

It has been theorized that the gas giant is a failed star, that was not big enough to start the chain reactions that would allow it to fuse hydrogen into helium. When it comes to being a star, its all about mass rather than size. The smallest star so far discovered is EBLM J0555-57Ab, a star that is smaller than Jupiter, located in the constellation of Pictor. Science Alert.

Jupiter`s Moons

There are about 67 known Jupiter moons currently known about. However there could be more. Jupiter`s moons were still being discovered in 2010, some time after the Voyager probes past by Jupiter and took the first pictures of the planet. Ganymede is the largest moon of any size in the solar system. Our Moon is the largest moon in comparison to the planet that it orbits. Callisto is about the same size roughly as Mercury, the inner most planet.

Jupiter Legend

Like all the other planets in the solar system, it is named after an ancient God. Its name comes from the ancient Roman king of the Gods, Jupiter. Jupiter is equivalent to the Grecian god, Zeus. The planet got its name by being the largest planet and by being the largest, it was apt to be called Jupiter. Jupiter`s wife, Saturn resides next to her husband in the heavens.

Jupiters Large Red Spot

Jupiter`s appearance is characterised by the large red spot that appears on the surface. The spot was first spotted (sorry) by English scientist Robert Hooke in 1664 and has been a source of fascination ever since. If its hard to imagine a storm on Earth that last more than a couple of hours, the Jupiter red spot will blow your mind then. The storm has been raging for at least 300 years and it seems that its not going to go out just yet. The red spot is about three times the size of the planet Earth. We don`t know how old the storm has been raging, we only know its been raging since before we started to observe the planet through a telescope. The equivalent largest storm on Earth is said to be about 1000 miles across, a didler in comparison. ref:B.B.C.

Jupiter is the Oldest planet in the Solar System

In addition to being the largest planet in the Solar System, it also holds the title of the oldest planet in the Solar System. Jupiter`s core is believed to have been created a mere one million years after the creation of the solar system. They have determined this by looking at meteorites which gave clues to the age and origin. According to the news, the centre of Jupiter is a large rock which gas grew round it. Even though it has a rock centre, its not a place that is likely to have life or be one which we would be able to visit due to the extreme pressures in the atmosphere. Ref: Daily Mail

Jupiter Rings

It may surprise you to learn that Saturn is not the only planet in the Solar System to have rings surrounding it. Jupiter as well as Uranus and the further gas planet Neptune all have rings. Jupiter`s rings were discovered when Voyager 1 space probe flew past the planet in 1979. Jupiter and Saturn aren`t the only gas planets that have rings, all the gas planets have rings. Gas giants aren`t the only objects in the Solar System that are thought to have rings. The asteroid Chariklo has been discovered to have rings. The Saturnian moon Rhea is believed to have a ring system. Ref: Quora

Artists Impression of the Rings of Jupiter with some moons

Jupiter Facts

Position from Sun5 A.U.
MeaningKing of Gods
Equatorial Radius71492
Volumetric Mean Radius69911
Mean Density1326
Orbital Period4332.589 Days
Length of Day9.9259
Average Temperature-165K/-108C
Surface Pressure>1000bars
Distance from the Sun778600000.0km from the Sun.
Orbit Eccentricity0.0489
Orbit Escape Velocity59.5
Surface Gravity0
AtmosphereMolecular hydrogen (H2) - 89.8% (2.0%); Helium (He) - 10.2% (2.0%)

List of Moons in orbit around Jupiter

MoonDiscoveredOrbit Circumference
Adrastea1979 810,530.25 km
Aitne9 December 2001 143,875,729.78 km
Amalthea1892 1,139,766.90 km
Ananke28 September 1951 131,676,895.83 km
Aoede8 February 2003 143,293,939.82 km
Arche10/31/2002 144,318,784.67 km
Autonoe10 December 2001 147,145,544.12 km
Callirrhoe19 October 1999 148,360,304.47 km
Callisto1610 11,829,191.03 km
Carme30 July 1938 144,663,765.05 km
Carpo26 February 2003 101,812,674.90 km
Chaldene23 November 2000 143,308,787.77 km
Cyllene9 February 2003 142,715,284.05 km
Discovered ByFebruary 2003 137,886,495.83 km
Elara1905 72,891,344.30 km
Erinome23 November 2000 143,676,263.20 km
Euanthe11 December 2001 130,407,330.98 km
Eukelade6 February 2003 143,888,850.71 km
Euporie11 December 2001 120,878,139.62 km
Europa1610 4,216,552.51 km
Eurydome9 December 2001 142,636,614.82 km
Ganymede1610 6,725,518.71 km
Harpalyke23 November 2000 130,889,070.41 km
Hegemone8 February 2003 143,589,402.13 km
Helike6 February 2003 131,634,048.78 km
Hermippe9 December 2001 132,310,864.30 km
Herse27 February 2003 144,745,680.45 km
Himalia3 December 1904 71,534,999.03 km
IO1610 2,650,236.42 km
Iocaste23 November 2000 132,096,242.29 km
Isonoe23 November 2000 143,721,469.29 km
Kale9 December 2001 144,056,039.82 km
Kallichore6 February 2003 144,056,292.25 km
Kalyke23 November 2000 145,783,482.82 km
Kore8 February 2003 149,532,006.36 km
Leda14 September 1974 69,679,979.34 km
Lysithea6 July 1938 73,387,003.90 km
Megaclite25 November 2000 142,719,992.96 km
Metis1980 804,247.43 km
Mneme9 February 2003 130,452,054.59 km
Orthosie11 December 2001 130,369,596.18 km
Pasiphae27 January 1908 142,016,762.95 km
Pasithee11 December 2001 142,461,469.64 km
Praxidike23 November 2000 131,098,561.00 km
S/2000 J11December 5, 2000 77,658,091.11 km
S/2003 J10February 2003 137,886,495.83 km
S/2003 J12between February 6 and March 7 2003 105,044,869.15 km
S/2003 J18April 2003 128,434,650.92 km
S/2003 J19February 2003 145,284,932.88 km
S/2003 J2February-March 2003 170,225,302.36 km
S/2003 J232003 145,223,973.12 km
S/2003 J34 March 2003 125,792,964.69 km
S/2003 J9February 2003 144,335,680.97 km
S/2010 J107 September 2010 142,662,928.98 km
S/2010 J28 September 2010 124,531,865.78 km
S/2011 J1
S2003 / J 150April 2003 140,890,033.90 km
S2003 / J16April 2003 129,847,901.28 km
S2003 / J4February-March 2003 145,466,560.91 km
S2003 / J5February 2003 145,353,525.04 km
Sinope21 July 1914 148,044,303.08 km
Sponde9 December 2001 145,740,935.31 km
Taygete25 November 2000 144,438,835.15 km
Thebe1980 1,394,130.84 km
Thelxinoe9 February 2003 131,368,538.70 km
Themisto30 September 1975 46,467,175.95 km
Thyone11 December 2001 131,252,020.60 km

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