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vocabulary terms

mrs. tejnecky vocabo thing that makes no sence

astronomy the science that looks at stars and galaxies and every thing else in the universe
geocentric having the earth as a center
heliocentric having the sun as a center
ellipse an closed plane curverd with a oval shape
astronomical unit the unit of leangth in the solar system
rotation the act of turning as if on an axis
revolution a single complete turn
perihelion periaapsis in solar oribit
aphelion apoasis in solar orbit
phase of the moon the moon interrups light from the sun
solar eclipse
lunar eclipse
terrestrial planet
jovian planet
electromagnetic spaectrum
doppler effect
refracting telescope
reflecting telescope
radio telescope
hubble telescope
space shuttle
Created by: 3065723