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WOW Words 1-1

1st 9 Weeks

all of space and everything in it including stars, planets, and galaxies universe
theory that states the universe began from the violent explosion of a primeval atom big bang
theory that puts earth in the center of the universe with everything revolving around it geocentric
theory that puts the sun at or near the center with earth and other bodies revolving around it heliocentric
the spiral galaxy containing our solar system Milky Way Galaxy
a system of millions or billions of stars, together with gas and dust held together by gravity galaxy
the force that pulls objects toward each other gravity
the tendency of an object to resist a change in motion inertia
the study of space and the universe astronomy
rocky object that revolves around the sun and are too small and too numerous to be called planets asteroid
Created by: sfelder