North America Will See A Black Moon Tonight - What Does That Mean? | Mach | NBC News

An eerie and rare phenomenon will grace the North American skies tonight: the rare, all-black supermoon. It is a second new moon in a single month – something that happens only about every 32 months because of the lack of sync between the 29 day lunar cycle and the months of our calendar.
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North America Will See A Black Moon Tonight - What Does That Mean? | Mach | NBC News

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