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After lots of hype, the "blood moon" finally graced the skies over North America late Monday night and early Tuesday morning.
The phenomenon is actually a total lunar eclipse; the moon appears to have a rosy tint due to the scattering of sunlight through the edges of the Earth's atmosphere. This is the first in a series of four total lunar eclipses that will occur every six months or so through September 2015. Make sure to take the telescope out before the last one; after these four, the next blood moon won't happen until 2032. --Catherine Garcia