Lecture 2 Astronomy Today
Lecture 2 Astronomy Today. 1 nanosecond = 1 ft. (1/1,000,000,000 second ). Light Speed = 299,792,458 meters/second. Using Light to Measure Distance. Earth to Moon = 1.28 light seconds. Light Speed = 299,792,458 meters/second. Using Light to Measure Distance.
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