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How far is a second?
You may have heard physicists describe the moon as being 1.3 light-seconds away, or the sun as 8 light-minutes away, and thought "what is this nonsense? measuring distances with...
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#measure distances
#distance to the moon
#Sydney
#LA
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#pelicule
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#30years
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#from the earth to the moon
#whale tail
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#tos
#ballena
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