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UA - PH/AY 101 - Class Notes - Week 7

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UA - PH/AY 101 - Class Notes - Week 7

School: University of Alabama - Tuscaloosa
Department: Astronomy
Course: AY 101 - Intro to Astronomy - Jeremy Bailin
Professor: Jeremy Bailin
Term: Spring 2015
Tags:
Name: AY 101 - Oct 4 Lecture Notes
Description: Lecture Notes from Tuesday, October 4, 2016
Uploaded: 10/04/2016
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background image AY 101 – OCTOBER 4 LECTURE  Asteroids    Mainly rock/metal, like Terrestrial worlds 
  Spaced far apart (70km between neighbors) 
Kuiper Belt Objects    Weywot 
  Quaoar 
  Sedna 
  Hi’iaka, Namaka 
  Makemake 
  Orcus 
  Ixion 
  Varuna 
  AW197 
  Eris 
  Dysnomia 
  Charon, Hydra, Nix 
  Pluto 
  Pluto and Charon    New horizons spacecraft flew past July, data from flyby slowly coming in (will be for years) 
  Universal expectation: too small, too little tidal forces to keep insides molten. Ought to be dead 
worlds covered in craters  Comets    Sometimes outer solar system objects get perturbed into orbits that approach the sun 
  When we measure their orbits, ost go out to either 50-100 AU (Kuiper Belt) or about 100,000 AU 
(Oort Cloud)    When a comet begins to heat up, it starts to sublimate into the atmosphere  o  On Friday, Rosetta Spacecraft soft-crashed into Comet 67P    Tails formed by gasses that sublimate off the nucleus, small dirt grains that come out  o  Tail always point away from the sun    Pushed away from the sun by solar wind  Formation of the Solar System    Key Observations:  o  Terrestrial v Jovian Planets 
o  Flat plane with mostly circular orbits 
o  Most orbits and rotation are in the same direction 
Meteor Showers    If Earth passes through the former path of a comet, the dirt grains burn up in our atmosphere  Protosolar Nebula    Collapsing very slowly-spinning gas cloud  o  Turns gravitational potential energy into thermal energy (heats up

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School: University of Alabama - Tuscaloosa
Department: Astronomy
Course: AY 101 - Intro to Astronomy - Jeremy Bailin
Professor: Jeremy Bailin
Term: Spring 2015
Tags:
Name: AY 101 - Oct 4 Lecture Notes
Description: Lecture Notes from Tuesday, October 4, 2016
Uploaded: 10/04/2016
2 Pages 22 Views 17 Unlocks
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  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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