super moon

Today, a "super blue blood moon" will occur, a rare coincidence that last occurred only in 1866. Source: NASA.

"Super Blue Blood Moon": What can scientists learn from today's lunar eclipse?

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The December 2017 supermoon, as photographed from Washington, DC. Photo: NASA/Bill Ingalls.

Look up: a very close blue moon

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The inclination of the earth compared to the sun in each of the months of the year. Illustration: shutterstock

Spring starts tomorrow, a solar eclipse today, and a new moon is also close at birth - Equinox 2015

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