Welcome Guest
Login /Register
Universe On Web
Top Story : UniverseOnWeb.com .....
solar system
Search Engine


Jupitor Planet

Solar System Explanation ::-- Sun|| Solar Planet || Mercury Planet || Jupitor Planet || Venus Planet || Earth Planet || Uranus Planet || Saturn Planet || Mars Planet || Neptune Planet || Dwarf Planet || Astroids || Comet ||

Facts about Planet Jupiter

* Diameter: 85,788 miles the largest planet - more than 12 Earths could line up across it

* Temperature: Range -163° C to >-121° C

* Distance from Sun: Approximately 466 million miles

* Atmosphere: Mostly hydrogen and helium

* Surface: A giant ball of mostly hydrogen and helium

* Rotation of its axis: 9 hours, 55 minutes in Earth time (the length of one rotation)

* Rotation around the Sun: 12 Earth years

* Magnetic Field: Yes

* Number of Moons: 63 moons have been identified Ganymede is the largest moon - it is bigger than both Mercury and Pluto.


Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn, Uranus and Neptune. Together, these four planets are sometimes referred to as the Jovian or outer planets.
The planet was known by astronomers of ancient times and was associated with the mythology and religious beliefs of many cultures. The Romans named the planet after the Roman god Jupiter. When viewed from Earth, Jupiter can reach an apparent magnitude of −2.94, making it on average the third-brightest object in the night sky after the Moon and Venus. (Mars can briefly match Jupiter's brightness at certain points in its orbit.)
Jupiter is primarily composed of hydrogen with a quarter of its mass being helium; it may also have a rocky core of heavier elements. Because of its rapid rotation, Jupiter's shape is that of an oblate spheroid (it possesses a slight but noticeable bulge around the equator). The outer atmosphere is visibly segregated into several bands at different latitudes, resulting in turbulence and storms along their interacting boundaries. A prominent result is the Great Red Spot, a giant storm that is known to have existed since at least the 17th century when it was first seen by telescope. Surrounding the planet is a faint planetary ring system and a powerful magnetosphere. There are also at least 64 moons, including the four large moons called the Galilean moons that were first discovered by Galileo Galilei in 1610. Ganymede, the largest of these moons, has a diameter greater than that of the planet Mercury.
Jupiter has been explored on several occasions by robotic spacecraft, most notably during the early Pioneer and Voyager flyby missions and later by the Galileo orbiter. The most recent probe to visit Jupiter was the Pluto-bound New Horizons spacecraft in late February 2007. The probe used the gravity from Jupiter to increase its speed. Future targets for exploration in the Jovian system include the possible ice-covered liquid ocean on the moon Europa.

Jupitor History

The Italian scientist, Galileo Galilei was the first astronomer to view Jupiter through a telescope. While viewing Jupiter, he observed four satellites orbiting the planet, which lent credence to the Copernican theory that the Earth and other planets revolve around the Sun. Previously, many people held to the belief, developed by 2nd century astronomer, Ptolemy, that everything revolved around the Earth. Galileo's discovery was a major step forward for astronomy. Jupiter's satellites are mostly named for his mythological lovers.

In May 2002, astronomers announced an additional 11 moons for Planet Jupiter. All 11 are small bodies with diameters estimated to be between 2 and 4 kms. The moons are inclined, highly elliptical retrograde orbits with an average distance of 21 million kms. from the giant planet. The number of moons now known to orbit Jupiter are 39 and makes it the planet with the most moons.

These discoveries have been possible by a new generation of electronic cameras that can scan wide areas of the sky and detect dim objects, making them very efficient tools to search for small moons.

Jupitor Rings

Jupiter has three thin rings around its equator. They are much fainter than the rings of Saturn.

Jupiter can’t ever become a Star

Jupiter is the fastest spinning planet in the Solar System.

Jupitor Magnetic Field

Jupiter’s magnetic field is 14 times as strong as Earth

You can see Jupiter with your own eyes

Jupiter is usually the fourth brightest object in the sky at night and in our in the Solar System. The three objects that are brighter than Jupiter are the Sun, the Moon and Venus. Occasionally, Mars sometimes appears brighter than Jupiter.

Jupitor Atmosphere

Approximately ninety percent of the upper atmosphere is hydrogen, and approximately ten percent of the upper atmosphere is helium.

Jupitor Life

Amazing as it may seem scientists have speculated that life on Jupiter is possible. This would occur beneath the cloud cover where room temperature conditions exist, these lifeforms would be airborne although this theory is thought to be highly speculative.

Jupitor Gravity

Because of the giant size of Jupiter, the gravity there is 2.4 times more than on Earth. If you weigh 100 pounds on Earth, you would feel like you weighed 240 pounds on Jupiter.

Distance From The Sun

Jupiter is almost 500 million miles from the Sun (483,780,000 miles). Earth is only 93 million miles from the Sun. Even though Jupiter is the largest planet in the Solar System, this is why it still looks so small.i

Great Red Spot

Great Red Spot is a continual anticyclonic storm. It’s located twenty two degrees south of the equator. The storm alone is actually larger than the planet Earth, or the planet Mercury. According to astronomers, there is evidence that the storm existed on the planet at least since 1831.


Jupitor Orbit and rotation

Jupiter is the only planet that has a center of mass with the Sun that lies outside the volume of the Sun, though by only 7% of the Sun's radius. The average distance between Jupiter and the Sun is 778 million km (about 5.2 times the average distance from the Earth to the Sun, or 5.2 AU) and it completes an orbit every 11.86 years. This is two-fifths the orbital period of Saturn, forming a 5:2 orbital resonance between the two largest planets in the Solar System. The elliptical orbit of Jupiter is inclined 1.31° compared to the Earth. Because of an eccentricity of 0.048, the distance from Jupiter and the Sun varies by 75 million km between perihelion and aphelion, or the nearest and most distant points of the planet along the orbital path respectively.
The axial tilt of Jupiter is relatively small: only 3.13°. As a result this planet does not experience significant seasonal changes, in contrast to Earth and Mars for example.
Jupiter's rotation is the fastest of all the Solar System's planets, completing a rotation on its axis in slightly less than ten hours; this creates an equatorial bulge easily seen through an Earth-based amateur telescope. This rotation requires a centripetal acceleration at the equator of about 1.67 m/s2, compared to the equatorial surface gravity of 24.79 m/s2; thus the net acceleration felt at the equatorial surface is only about 23.12 m/s2. The planet is shaped as an oblate spheroid, meaning that the diameter across its equator is longer than the diameter measured between its poles. On Jupiter, the equatorial diameter is 9275 km longer than the diameter measured through the poles.
Because Jupiter is not a solid body, its upper atmosphere undergoes differential rotation. The rotation of Jupiter's polar atmosphere is about 5 minutes longer than that of the equatorial atmosphere; three systems are used as frames of reference, particularly when graphing the motion of atmospheric features. System I applies from the latitudes 10° N to 10° S; its period is the planet's shortest, at 9h 50m 30.0s. System II applies at all latitudes north and south of these; its period is 9h 55m 40.6s. System III was first defined by radio astronomers, and corresponds to the rotation of the planet's magnetosphere; its period is Jupiter's official rotation.