Physics, 09.07.2019 20:00 22haydeabiy
If an astronomical object's parallax is one-half arcsecond, how many parsecs is it from earth? a. 1/2 b. 1 c. 2 d. 30
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If an astronomical object's parallax is one-half arcsecond, how many parsecs is it from earth? a. 1...
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