A second full moon in a calendar month will occur on May 31 and be best seen at moonrise on May 30. Why is the Blue Moon one ...

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A cosmic vanishing act is about to unfold in the night sky as the full moon passes directly between the Earth and one of its planetary neighbors Wednesday night. "December 7 brings one of those ...

If you live anywhere in the contiguous U.S. or Canada, and clear skies are forecast for early Sunday morning, July 20, then be sure to step outside after midnight and before the first light of dawn.