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Supermoon, blue moon, blood moon on Jan. 31

There are super moons, blue moons and blood moons. Depending on where you are on January 31, 2018, you will be treated to a rare sight-- seeing all three at the same time. (Photo credit: CNN)

There are super moons, blue moons and blood moons.

Depending on where you are on January 31, 2018, you will be treated to a rare sight-- seeing all three at the same time.

A supermoon occurs when the full moon is closer to earth and bigger than normal.

A blood moon is when it takes on a reddish tint during a lunar eclipse.

And a blue moon is when two full moons happen in a single month.

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