February 27, 2008

February 27, 2008 - o Oort cloud o Exceptions Rotations •...

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CLASS IN FISKE PLANETARIUM NEXT WEDNESDAY ONLINE HW DUE FRI 8 TEST NEXT FRIDAY BRING LEC-TUTORIAL TO CLASS ON FRIDAY THIS THURS(FREE) AND FRI($5) LECTURE 7:30 PM FISKE PLNETARIUM February 27, 2008 Clicker question o The elements in the solar nebula were… Were created in stars and the big bang Patterns in the solar system o Patterns of motion Almost every body orbits and spins in the same direction Counter clockwise from above Planetary orbits nearly circular, lie in nearly the same plane Large moons tend to exhibit the same properties o Patterns of types Terrestrial planets Closer to the sun Mostly rock and metal No rings Only one or two moons Can stand on Smaller size and mass Higher density Jovian planets Farther from the sun H, He and H- compounds rings many moons can’t stand on large size and mass lower density types of small bodies rocky o asteroids Ice and rock o Comets o Kuiper belt objects
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Unformatted text preview: o Oort cloud o Exceptions Rotations • Venus o Backwards • Uranus o On its side Orbits • Triton o Backwards Moons • Earth’s moon o Big (compared to earth) • Most small moons o Screwy shapes and orbits Four challenges for a solar formation theory o Orderly motions o Two kinds of planets o Two kinds of small bodies o Exceptions to the rules Formation: sources of evidence o Star forming regions Chemistry of material o Our solar system o Other solar systems Similarities and differences Collapse of the solar nebula o Formation of the sun o Theories of star formation are based on observing millions of stars of different ages o Start with a nebula of gas and dust Nebula = noun = “cloud” (plural = nebulae) Nebular = adjective = “cloud like” The astronomer’s periodic table o Mostly H and more Hydrogen o Some heliun o Tiny amount of other elements o...
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This note was uploaded on 04/07/2008 for the course ASTR 1110 taught by Professor Hornstein during the Spring '08 term at Colorado.

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February 27, 2008 - o Oort cloud o Exceptions Rotations •...

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