Effects of Facebook in the Academic Performance of College Students

Topics: Planet, Jupiter, Pluto Pages: 4 (1102 words) Published: February 24, 2013
82.5 percent hydrogen, 15.2 percent helium, 2.3 percent methane. Revolution
The orbit of Uranus takes 84.3 year to complete one revolution around the Sun. In other words, 1 Uranian year is 84.3 Earth years.

Special feauture
Uranus was the first planet to be discovered in modern history. It was actually discovered by accident in 1781 by William Herschel. Like the other gas giants, Uranus has a very thick cloud cover and an atmosphere made up mostly of hydrogen, helium, methane, and ammonia. The trace amount of methane is what gives Uranus and its twin, Neptune, their blue color. Unlike Saturn and Jupiter, Uranus has a different internal structure. The core of Uranus is probably composed of liquid rock. Then, farther up, the liquid rock slowly gives way to an ocean made mostly of hydrogen, helium, and water, with small amounts of ammonia and methane. This "ocean" accounts for most of Uranus's bulk. Then, the water slowly thins out into the bland, almost featureless atmosphere. Uranus also has a system of about 11 rings - not nearly as large as Saturn's. Nine were found when Uranus passed in front of a bright star, the rings causing the star to temporarily disappear when they passed in front of it. This was the first time astronomers had detected rings around any planet other than Saturn. It was the first time, also, that astronomers had detected thin rings around any planet. The other two rings were found when Voyager 2 passed by. Uranus also has 27 known moons, most of which little is known about. Unique Characteristics

Uranus has two main unique features. First, there is absolutely no detail in the cloud cover. Only when pushed to the maximum level of color enhancement and contrast on computers do scientists start to see small swirls in the atmosphere. Second, Uranus is the only planet rotates on its side. This produces the strangest seasons of any planet in the solar system. For 21 years, Uranus's moons are seen as one...
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