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By Kenny And Cole Uranus.

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1 By Kenny And Cole Uranus

2 Discovery Was discovered to be a planet by William Herschel in 1781
Herschel observed the parallax on the fixed stars

3 Background Seventh planet from Sun Fourth largest mass in Solar System
Named after Greek deity of the sky, Uranus Uranus is the father of Cronus (Saturn)

4 Atmosphere Mostly consists of hydrogen and helium
Also consists of Methane with absorption bands which make Uranus appear cyan.

5 Atmosphere Troposphere temperature drops from 320K to 53K
Upper troposphere temperature is 49-57K Troposphere consists of water clouds, methane clouds and hydrogen sulfide clouds

6 Orbit of Uranus Uranus takes 84.3 Earth years to make one revolution around the Sun Rolled over completely sideways (axial tilt of 99 degrees) Causes for extreme seasons (North pole has 42 years of darkness followed by 42 years of sunlight) Scientist thinks it sideways due to early impact from a protoplanet gave momentum to turn sideways Elliptical Orbit: Perihelion: 18.4 AU Aphelion: 20 AU

7 Formation of Uranus Uranus did start off like all other gas giants (with upright axis of tilt) along with the Big Bang Theory However people speculate that a planet the size of Earth hit Uranus There is no hole or damage from impact and the collision would have made the orbit more elliptical

8 Moons of Uranus Ten Inner Moons: Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda, Puck Large Moons: Miranda, Ariel, Umbriel, Titania, Oberon Titania is the largest moon Moons orbit around Uranus’ equator which is at a right angle to the elliptic (account for .1% of Uranus total mass) If it were more mass then it would be evidence for Uranus being so sideways

9 Works Cited "Planets: Uranus." Solar System Exploration. Web. 04 Mar < "Uranus Facts." Kid's Cosmos-Science Resources for Teachers and Students. Web. 04 Mar < "Uranus  L  Uranus Facts, Pictures and Information." The Nine Planets Solar System Tour. Web. 04 Mar < "Uranus." Views of the Solar System. Web. 04 Mar <


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