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The Far reaches of the universe<br />By Isabel and Nora<br />
Part 1: Comets <br />
Water<br />Comets are partly made of ice<br />When comets go near the sun, some of the ice melts and the comet gets smalle...
Scale<br />Comets are about 5-10 kilometers wide<br />Comet tails are usually  100,000 kilometers<br />The larger the come...
Comet Tails<br />Dust tails shed comet materials from the nucleus<br />Ion tails are made of ions, electrically charged at...
Part 2: the Oort Cloud<br />
States of Matter, Materials and Densities<br />The Oort Cloud has a dense core<br />1/6 of the icy objects in the Oort clo...
Gravity, Orbiting and Centripetal Forces<br />Stars in The Milky Way  affect The Oort Cloud’s gravity<br />The Oort Cloud ...
Bibliography<br />Rosanna, H. (2011, February 3). The oort cloud. Retrieved from http://www.solarviews.com/eng/oort.htm<br...
The Comet/Oort Cloud Movie<br />
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Kuiper belt and oort cloud, Isabel and Nora

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Transcript of "Kuiper belt and oort cloud, Isabel and Nora"

  1. 1. The Far reaches of the universe<br />By Isabel and Nora<br />
  2. 2. Part 1: Comets <br />
  3. 3. Water<br />Comets are partly made of ice<br />When comets go near the sun, some of the ice melts and the comet gets smaller<br />This is how most comets die, they get smaller and smaller<br />Tools for Discovery and Investigation<br />Spaceguard is a program that tracks any big objects in space like comets, asteroids or meteors that could hit us<br />The Hubble telescope was launched by NASA and takes pictures in space<br />It was originally inaccurate, but they sent people into space to fix it<br />Satellites and traveling probes can also help us discover things about the solar system<br />
  4. 4. Scale<br />Comets are about 5-10 kilometers wide<br />Comet tails are usually 100,000 kilometers<br />The larger the comet, the larger the tail<br />Two recent Oort Cloud comets were Hyakutake and Hale-Bopp<br />Hyakutake was average in size and came 15 million kilometers close to earth<br />Hale-Bopp was unusually big, but it didn’t aproach closer than 1.32 AU* to earth<br />Bright comets can be seen every 5-10 years<br />*Note: 1 astronomical unit is 149,598,000 kilometers <br />
  5. 5. Comet Tails<br />Dust tails shed comet materials from the nucleus<br />Ion tails are made of ions, electrically charged atoms, and always face away from the sun<br />The solar wind helps cause the ion tails<br />Solar radiation ionizes the material in comets<br />Comets only have tails when they are near the sun<br />Ion tails always face away from the sun<br />Black=nucleus<br />Tan=coma <br />Yellowish=head of comet<br />Blue=dust tail<br />Red=ion tail<br />Head of comet<br />
  6. 6. Part 2: the Oort Cloud<br />
  7. 7. States of Matter, Materials and Densities<br />The Oort Cloud has a dense core<br />1/6 of the icy objects in the Oort cloud are in the dense core<br />A giant molecular is a cloud that is far more massive than the sun. It is the birthplace of stars and solar systems. When encountered it can redistribute comets in The Oort Cloud<br />Tools For Discovery and Investigation<br />The Oort cloud is named after Jan H. Oort<br />
  8. 8. Gravity, Orbiting and Centripetal Forces<br />Stars in The Milky Way affect The Oort Cloud’s gravity<br />The Oort Cloud can sometimes be the source of long period comets<br />Sometimes long period comets in The Oort Cloud are pulled by planets gravity and turned into short period comets<br />Scale<br />The total mass of all the comets in The Oort Cloud is 40 times that of earth*<br />*Note: Earth is 5.7 times 10 to the 24th power <br />The Oort cloud is 3 light years long and 3 light years away from the sun<br />Comets are usually tens of millions of kilometers apart within The Oort Cloud<br />
  9. 9. Bibliography<br />Rosanna, H. (2011, February 3). The oort cloud. Retrieved from http://www.solarviews.com/eng/oort.htm<br />Rosanna, H. (2011, February 3). Comet introduction. Retrieved from http://www.solarviews.com/eng/oort.htm<br />Davies, J. (2001). Beyond pluto. Cambridge, United Kingdom: Cambridge University Press.<br />University of Washington. "Crashing Comets Not Likely The Cause Of Earth's Mass Extinctions." ScienceDaily 31 July 2009. 3 February 2011 <http://www.sciencedaily.com­ /releases/2009/07/090730141552.htm>.<br />Harvey, S. (2011, February 4). Deep impact. Retrieved from http://solarsystem.nasa.gov/deepimpact/index.cfm<br />
  10. 10. The Comet/Oort Cloud Movie<br />
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