Jupiter is the planet we will inform you about. It is the fifth planet from the Sun and it has at least sixty- three moons to date. Four of these moons can be veiwed from Earth. The names of these moons are Io, Europa, Ganymede, and Callisto. Jupiter is 777 million kilometers from the Sun, but for all us Americans that would be 483 million miles! A day on Jupiter is only nine hours and fify- five minuets, about half of an Earth day. But on the other hand its year is 4,332.59 days.More important information is to come in the next paragragh!

Such as, Jupiter's mass is 311 times the mass of the Earth. For all of you how don't like math, that has already been taken care of. The calculation is 1,902,000,000,000,000,000,000,000,000 kilograms. Or the fact that Jupiter's diameter is 142,983 kilometers, that is 88,846 miles. Since Jupiter is so far away from the Sun its adverage temperature is -153 degrees celius, or -244 degrees fahrenheit. Jupiter's adverage density is 1.326 grams per cubic centimeter. Because Jupiter is made mostly of gas it spins very fast that's why the ecscape velocity would be 214,203 kilometers or 133,100 miles per hour! Jupiter is made up of three layers. The first layer is the atmosphere. Below the atmosphere liquid hydrogen and helium is the second layer. The third layer is most likly to be solid rock. These layers are made up of the following: hydrogen, helium, methane, ammonia, corbon monoxide, ethane, acetylene, phosphine, and FINALLY water vapor.
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The Great Red Spot
The most unique feature about Jupiter is The Great Red Spot. The Great Red Spot is a high pressure storm.

No one knows exactly who and when Jupiter was discovered. But it is know that the Greeks found the planet.So, the Greek dude that found Jupiter named the planet after a Greek god. Juipter was named after Jova also known as Zeus, the ruler of the gods. Jupiter was named after Jova because Jupiter is the largest planet in the solar system.
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Jupiter's symbol


The United States has lanched six probes in the direction Jupiter. Pioneer10, Pioneer-Saturn, Voager 1, Voage 2, Ulysses, and Galileo. Pioneer 10 was launched in 1972. It flew within 81,000 miles of the planet. On December 3, 1973 the probe revealed the effects of Jupiter's radiation belt on a spacecraft. Pioneer-Saturn flew within 27,000 miles of Jupiter. the probe collected data on Jupiter's Great Red Spot, magnetic feild, and atmoshpereic pressure. It also got close up pictures of the planet's polar regions. The Voyager 1 and 2 flew by the planet in March and July of 1979. They found lightning in Jupiter's clouds on the folw pattern of said coluds. The space probe that actually went to Jupiter was Galileo. Galileo was launched in October 1989. Galileo studied Jupiter's magnetic feild. It also found that Jupiter's rings were made up of kicked up dust from when meteriods crashed into the planet's four already mentoined moons. Galileo also showed that Jupiter's outermost ring is actually two rings, one inside another. Galileo's mission was extended in 1997 and again in 1999. Eventually, the craft ran low on fuel. In September 2003, mission managers purposly crashed Galileo into Jupiter's atmosphere to avoid any risk of the craft crashing into and contaminating Jupiter's moon, Europa.

Some interesting facts about Jupiter is that a person wieghing 110 pounds would weigh 260 pounds on the planet. Likewise, a 170 pound person would wiegh 401.8 pounds. If Jenny, Jessa, and I lived on the planet our next birthdays would be (in order from the names): Tuesday, January 25, 2019; Wednesday, August 28, 2019; and Thursday, May 2, 2019. Or if we built a scale model and the Sun was 615 millimeters Jupiter would be 63.1 millimeters.

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Bibliography:
http://www.kidsastronmy.com/solar_system.htm
http://www.exploratorium.edu/ronh/weight/index.html
http://www.exploratrium.edu/ronh/age/index.html
http://www.exploratium.edu/ronh/solar_system/index.html

http://en.wikipedia.org/wiki/Jupiter
http://www.chilrensmuseum.org/cosmicquest/fieldguide/planeys.html
www.windows.ucan.edu/...=/jupiter/discovery.html&edu=high
http://www.nasa.gov/worldbook/jupiter_worldbook.html