Vocabulary Tests Available for:
"Astronomy "
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altitude
angular size
apparent retrograde motion
astronomical unit (au)
axis tilt
big bang
celestial equator
celestial sphere
circumpolar
copernican revolution
direction
eclipses
ecliptic
ecliptic plane
ellipse
galaxy
galaxy clusters
geocentric model
horizon
light-years
local sky
lunar eclipse
lunar phases
meridian
nuclear fusion
orbit
precession
ptolemaic model
rotation
solar eclipse
solar system
stellar parallax
superclusters
synchronous rotation
types of lunar eclipses
types of solar eclipses
universe
zenith