Notes on Anual Motions 2

Notes on Anual Motions 2 - Sun in the sky How does the...

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Homework 1 due NOW on chairs outside Day labs have started Night labs start Monday - see schedule on WebCT under Notes Homework 2 due next Friday - posted today It's all there on Webct.colorado.edu
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Annual Motions - Actual Actual motion = Earth orbits the Sun. Plane of orbit = ecliptic Lab topic
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Annual Motion: The sky varies as Earth orbits the Sun • As the Earth orbits the Sun, the Sun appears to move eastward along the ecliptic. • At midnight, the stars on our meridian are opposite the
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Unformatted text preview: Sun in the sky. How does the orientation of Earth’s axis change with time? •Although the axis seems fixed on human time scales, it actually precesses over about 26,000 years. ⇒ Polaris won’t always be the North Star. ⇒ Dates that Earth is opposite constellations has shifted by about a month over 2000 years Earth’s axis precesses like the axis of a spinning top...
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This note was uploaded on 04/16/2008 for the course ASTR 1010 taught by Professor Bagenal,fr during the Fall '07 term at Colorado.

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Notes on Anual Motions 2 - Sun in the sky How does the...

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