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Partial lunar eclipse seen in China

Partial lunar eclipse seen in China

 

Photo taken on Aug. 8, 2017 shows the moon during partial lunar eclipse over Shenzhen, Guangzhou province. (Photo by Wu Dejun/Guangming Picture)

Earth’s shadow has two parts: the umbra, which is the darker inner portion, and the penumbra, the lighter outer part. Their interactions with the moon can create three types of lunar eclipses: partial, total and penumbral. Any lunar eclipse can only happen at full moon, when the moon is opposite, or nearly opposite, the sun in Earth’s sky. That’s the only time that it’s possible for the moon to sail through the Earth’s shadow. Of course, to watch this lunar eclipse, you have to be on the night side of our world while the eclipse is taking place.

[ Editor: Wang Peiyao ]