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The top documents tagged [red shift blue shift]
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The Big Bang, Galaxies, & Stars. Big Bang theory – Origin of the Universe Big Bang marks the inception of the universe Occurred about 13.7 billion years
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28 August 2015 1 Astronomy The Universe Stars Our Solar System OrbitsGravity
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SPECTROSCOPY
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Red Shift/Blue Shift The Doppler Effect with Light
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