| A | B |
|---|
| Lunar eclipse | Earth's shadow blocks out the view of the moon |
| Solar exlipse | Moon's shadow blocks out the sun at a single location on Earth |
| Doppler Effect | apparent change in wavelength cause by a change in distance btwn two objects |
| red shift | shifting of visible light; objects is going "away from us" |
| blue shift | object is moving "Towards us" |
| Foucault Pendulum | rotation of Earth |
| Ellipse | closed curve, planetary orbits |
| orbit | path a planet takes around the sun |
| Solar system | made up of a star and all the objects that revolve around it |
| Asteroid | solid rocky or metallic object that orbits the sun |
| galaxy | large grouping of stars |
| geocentric | modle of the solar system where the earth is the center |
| heliocentric | sun is the center of the universe |
| meteor | shooting or falling star |
| luminosity | brightness |
| universe | everything that exists |
| revolution | amount of time to go around the sun |
| rotation | spinning on an axis |
| celestial object | outside Earth's Atmosphere |
| Focus | fixed point |
| altitude | angular distance of a celestial object about the horizon |
| eccentricity | out of roundness |
| tides | rising and falling of the oceans caused by moon's gravitional attraction to the Earth |
