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By in
on Oct 22, 2012

Geometry_of_a_Lunar_Eclipse.svg

Tonight, the full moon stays primarily within the faint penumbral shadow. Only the northernmost part of the moon will touch the southernmost part of the dark umbral shadow. Image credit: Wikimedia Commons

Tonight, the full moon stays primarily within the faint penumbral shadow. Only the northernmost part of the moon will touch the southernmost part of the dark umbral shadow. Image credit: Wikimedia Commons