Lecture_Chap_14_3-4_

Lecture_Chap_14_3-4_ - Midterm 2 Histogram 2 4 6 8 10 12 14...

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Unformatted text preview: Midterm 2 Histogram 2 4 6 8 10 12 14 1 2 1 5 1 8 2 1 2 4 2 7 3 3 3 3 6 3 9 4 2 4 5 4 8 M o r e Bin Frequency Frequency A- B- C- • You can still get 4 pts extra credit for attending a planetarium and telescope show Wed Mar 5 or 12 (if you haven’t already, one planetarium and two telescope shows is max). http://www.astro.ucla.edu/planetarium/ • Observational trip to Final Chance Sat Mar 8 pending weather. Prediction is 35% clouds. • Turn in any extra credit you have Thursday. I will accept extra credit up through the next Thursday Mar 13. • The tables of observed objects are for the Stunt Ranch and Final Chance trips. For planetarium and telescope shows, a few sentences suffice. For the eclipse, turn in a paragraph. North American Nebula When you understand all about the energy sources of stars, and when you understand the structure of the galaxy and the birth and death of stars, you may still miss the beauty of a starlit summer evening. There is no substitute for the direct perception of the concrete achievement of a thing in its actuality. Alfred North Whitehead paraphrased from Science and the Modern World, Cambridge University Press 1933 The Origin of the Milky Way Jacopo Tintoretto 1575 Milky Way Schematic Milky Way Galaxy 400 billion stars Rotation period for Sun: 250 million years (rotation is differential) Visible disk is 100,000 light years in diameter, and a few thousand light years thick. A Face-on Spiral M101...
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This note was uploaded on 04/23/2008 for the course ASTR 3 taught by Professor Hauser during the Winter '07 term at UCLA.

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Lecture_Chap_14_3-4_ - Midterm 2 Histogram 2 4 6 8 10 12 14...

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