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Jupiter Short Facts
Jupiter Sign/Name
Jupiter Pictures
More Jupiter Pictures
Missions to Jupiter
   -  Pioneer 10
   -  Pioneer 11
   -  Voyager
   -  Galileo
   -  Ulysses
   -  Cassini
   -  Europa Orbiter
Jupiter Moons
   -  Metis
   -  Adrastea
   -  Amalthea
   -  Thebe
   -  Io
   -  Europa
   -  Ganymede
   -  Callisto
   -  Themisto
   -  Leda
   -  Himalia
   -  Lysithea
Jupiter Summary


Short Facts about Jupiter!

- Jupiter is the fifth and largest planet in our solar system.

- It is a large gas giant with a very thick atmosphere.

- Jupiter has 67 known moons, Galileo first discovered the four largest moons of Jupiter, Io (which is volcanically active), Europa, Ganymede (the largest of Jupiter's moons, pictured at the left), and Callisto in 1610; these moons are known as the Galilean moons. Ganymede is the largest moon in the Solar System.

- More moons are being found all the time.

- Jupiter has faint, dark rings composed of tiny rock fragments and dust. These rings were discovered by NASA's Voyager 1 in 1980. The rings were investigated further when Voyager 2 flew by Jupiter. They do not reflect very much of the sunlight that they receive.

- Jupiter has been well-known since ancient times. It is the third-brightest object in the night sky (after the moon and Venus).

- It takes Jupiter 9.8 Earth hours to revolve around its axis. It takes 11.86 Earth years for Jupiter to orbit the sun once.

- A 100-pound person would weigh 254 pounds on Jupiter.

- Jupiter's diameter is 88,700 miles (142,800 km). This is a little more than 11 times the diameter of the Earth. Jupiter is so big that all the other planets in our Solar System could fit inside Jupiter.

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