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Speed of Light Questions
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therocketjohn
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Lectures Documentaries & Books (Science, Physics, Cosmology)
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Hawking Radiation
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origin
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comet lulin
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Matter, photons, tachyons, and...
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west sky bright for hours
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neutron star
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Comet Lulin (2007/N3) visible around midnight in Northern Hemisphere?
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A question to the space.com astronomers.
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Saw a star pulsating last night with blueish and reddish tints
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Question
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weeman
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UncertainH
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Does anyone know?
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