Astronomy 161 - Winter 2008
Professor Terndrup
Lecture 3, 1/09/08
Long-term Motions of the Sky
Reading: Chapter 2, sections 2.3 through 2.5.
Vocabulary terms and key concepts:
aberration of starlight
astronomical unit
why we have seasons
summer / winter solstice
vernal (spring) / autumnal (fall) equinox
precession
phases of the moon
rise/set times for the moon in various phases
moon's sidereal period
moon's synodic period (and why it differs from the sidereal period)
types of eclipses and when they happen
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This page Copyright © 2008, Donald M. Terndrup. All rights reserved.
Last modified January 3, 2008 (dmt).
