You should be familiar with all terms on this list. That is, you should
understand them conceptually, and be able to relate them to other ideas. Note that, in many cases,
the definitions for these terms given in the glossary are overly complex. The best place to go
when studying these terms is the text in Chs. 1-3.
acceleration
astronomical unit
aphelion/apogee
celestial sphere/pole
circumpolar zone
Circle, Arctic & Antarctic
cosmology
crescent/gibbous
declination
eccentricity
eclipse -- lunar & solar
ecliptic
ellipse
epicycle
equinox
focus/foci of ellipse
geocentric
heliocentric
parallax
perigee/perihelion
retrograde motion
right ascension
semimajor axis of ellipse
sidereal day
tides -- spring & neap
Tropic of Capricorn/Cancer
waxing/waning
zenith
zodiac