The image was taken during a total lunar eclipse when the normally bright full moon turned into a faint orb tinted orange by the intervening Earth's atmosphere.
这张图片是在月全食时拍摄的，当时本该明亮的满月由于地球大气层的干涉，变成了一个橙色的黯淡光球。
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If there is a lot of dust from a volcanic eruption, for example, the lunar surface may turn a dark brown, but if the atmosphere is clear, it may turn a striking blood red.
SYDNEY - Asian and African night owls were treated to a lunar eclipse, and ash in the atmosphere from a Chilean volcano turned it blood red for some viewers.