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Descriptive Astronomy Certification Exam Questions and CORRECT Answers
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How fast does light travel300,000 km/sec how long does it take light to travel from the nearest galaxy (M31)2 million years looking far away == looking back in time light yearthe distance light travels in one year Astronomical Unitdistance between earth and the sun 1.5e8 Parsecequivalent to about 3 light years statistical noisenot enough dat
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