Dim - Not bright, or dark, redshift - evidence that supports the Big Bang theory showing object moving away from earth, Doppler shift - the movement of an object towards or away from another object, nebula - birthplace of stars, Illumination - to make brighter, expand - to diverge or spread apart, contract - to converge of come together, revolution - to orbit, or go around, elliptical galaxy - Older galaxies that are circular shaped with little dust, spiral galaxy - Most common galaxy with a bulge and arms,

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