ABC News July 31, 2015

Blue Moon Explained

Name: What Is a Blue Moon?
Uploaded: 2015-07-31T15:30:24
Duration: PT35.0S
Description: When you gaze up at the sky Friday night, you'll see a blue moon, but what exactly is a blue moon?

When you gaze up at the sky Friday night, you'll see a blue moon, but what exactly is a blue moon?

Blue Moon Explained

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