The Moon, appearing a dim red colour, is covered by the Earth's shadow during a total lunar eclipse over Calvine, Perthshire, Scotland
© Russell Cheyne / Reuters / REUTERS

NBCNews.com   |  April 14, 2014

What Is a Blood Moon?

On April 15, stargazers will be getting a celestial treat that some have termed as blood moon. Astrophysicist Summer Ash explains what to expect from the lunar event.

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