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The interstellar ________ absorbs light from stars and makes them appear fainter and redderthan they otherwise would appear.
Q11: Most large spirals and ellipticals are comparable
Q20: String theories,like GUTs,explain how gravity was combined
Q56: Michelson and Morley demonstrated that the speed
Q72: What unusual discovery was made about the
Q78: How do head-tail radio galaxies reveal their
Q94: The Galactic center in _ is best
Q95: What is the force that keeps a
Q96: If successive generations of stars return material
Q100: Once carbon is formed in massive star
Q101: Both RR Lyrae and Cepheid variable stars