Uranus

Uranus

**Composition**  ⇒atmosphere composed of 83% helium, 15% methane, 2% other gases
 * Internal=water, methane, and ammonia in the form of ice, but is warm so it can flow like the mantle layers of the Earth because of metals in the core
 * External=mix of methane, hydrogen, and helium gases (methane give it the blue color)


 * Size **
 * third largest radius
 * radius=15,759 miles
 * surface area= 3.121 billion square miles
 * 14.5 times bigger than the earth




 * Density **
 * 2nd least dense planet (made up mostly of ices)
 * 1.27 g/cm³


 * Orbit **
 * 84 years to complete one revolution around the sun




 * Surface features **
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">lacks a solid, well defined surface
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">instead has a gas, liquid, and icy atmosphere


 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Tectonic activity **
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">None (lacks the core and crust responsible for tectonic activity)


 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Surface temperature **
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">coldest planet in the solar system
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Average surface temperature= 49° Kelvin (-224° Celsius)
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">core= 5000° Kelvin


 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Suitability for life **
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">No, you would freeze into ice due to the atmosphere before you even hit the “surface” of Uranus
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">there is no surface to Uranus
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">the pressures where it is warm enough to sustain life are so great it would crush life
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">has no form of energy


 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Additional information **
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">gas giant
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">gravity is 90% of that on earth (i.e. if you are 100 lbs you’re 90-91 lbs on Uranus)
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">radiates almost no excess heat into space unlike other planets
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">sideways rotation (90° axis) indicative of a collision
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">fairly weak magnetic field
 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">has 13 known rings made out of rock and ice around equator


 * <span style="background-color: transparent; color: #000000; font-family: Arial; font-size: 13px; text-decoration: none; vertical-align: baseline;">Videos **

[|__http://www.youtube.com/watch?v=-ElXNcGxNMo&feature=player_embedded__] (main moons included in this video)

[|__http://www.youtube.com/watch?v=G7f1nuwRq_E__] (overview)

**SOURCES** <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">Cain, Fraiser. "Could There Be Life on Uranus?." Universe Today — Space and astronomy news. N.p., n.d. <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">Web. 24 Apr. 2013. <http://www.universetoday.com/19285/could-there-be-life-on-uranus/>.

<span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">"Composition of Uranus' Interior."Windows to the Universe. N.p., n.d. Web. 24 Apr. 2013. <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">< [|__http://www.windows2universe.org/uranus/interior/U_int_compo_overview.html__] <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">>

<span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">Redd, Nola. " What is Uranus Made Of? | Uranus Composition | Space.com ."Space and NASA News – <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">Universe and Deep Space Information | Space.com. N.p., n.d. Web. 24 Apr. 2013. <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">< [|__http://www.space.com/18706-uranus-composition.html__] <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">>.

<span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">" Temperature on Uranus: Cold Planet Uranus Climate & Weather Condition."Planet Facts – Fun & Interesting <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">Information About the Nine Planets. N.p., n.d. Web. 24 Apr. 2013. <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;"><http://planetfacts.org/temperature-on-uranus-a-cold-cold-planet/>.

<span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">"Uranus -- Science." SSEC. N.p., n.d. Web. 24 Apr. 2013. <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">< [|__http://www.space.com/18706-uranus-composition.html__] <span style="background-color: transparent; color: #4d4d4d; font-family: Verdana; font-size: 11px; text-decoration: none; vertical-align: baseline;">>