‘Blood moon’ eclipse to grace pre-dawn skies on Wednesday

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Early risers across much of the world are in for a treat on Wednesday morning – a total lunar eclipse, also known as a “blood moon” due to the coppery, reddish color the moon takes as it passes into Earth’s shadow.

The total eclipse is the second of four over a two-year period that began April 15 and concludes on Sept. 28, 2015. The so-called tetrad is unusual because the full eclipses are visible in all or parts of the United States, according to retired NASA astrophysicist Fred Espenak.

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