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 Date: 1998-04-20 15:00:25Light Light sources Lighting Star types Space telescopes Magnitude Star Incandescent light bulb Luminosity Physics Astronomy Observational astronomy |
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Date: 1998-04-20 15:00:25Light Light sources Lighting Star types Space telescopes Magnitude Star Incandescent light bulb Luminosity Physics Astronomy Observational astronomy |
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SOLAR PHYSICS AND TERRESTRIAL EFFECTS Activity 4