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During totality the only light that reaches the Moon is that which is refracted in by the Earths atmosphere. As in the case of a sunset the light has to travel further through the atmosphere and the blue end of the spectrum is filtered out by dust and water vapour in the atmosphere.

2007-09-16 06:49:08 · answer #1 · answered by Anonymous · 1 0

Selective filtering through the Earths atmosphere of the longer wavelengths due to dust particles and refraction. Pretty much the same reasons that morning and evening skys are usually reds and oranges.

Doug

2007-09-16 06:47:35 · answer #2 · answered by doug_donaghue 7 · 2 0

light polution from bigger cities will do it... every lunar eclipse i saw growing up in chicago was reddish not totally dark.. this is due to the amount of light radiated by the city, also air pollution will do it too i.e. smog, ozone and the like.

2007-09-19 10:13:12 · answer #3 · answered by dirtybreaks 1 · 0 0

an identical reason a sunset or dawn looks purple. easy coming via our environment at a low perspective and refracting via it reasons the earth's shadow on the moon to look reddish orange.

2016-10-09 07:09:50 · answer #4 · answered by ? 4 · 0 0

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