Tomorrow morning almost everyone on the east coast in the Americas, eastern Asia, the Pacific Islands, and Australia will get the rare opportunity to see a special type of lunar eclipse called a selenelion, or horizontal, lunar eclipse.
A selenelion only occurs when a lunar eclipse happens around the same time as sunrise. Because of its timing, observers have the chance to see both an eclipsed moon-set and sunrise simultaneously.
According to simple geometry, we should not be able to see both the moon and the sun simultaneously during this eclipse configuration. However, Earth's atmosphere bends the light from the sun and moon, making them appear higher in the sky than they actually are.
So, on Wednesday morning, for between two and nine minutes, you might get the chance to see both moonset and sunrise at the same time, which is very rare.
Complete article on Msn



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