Enjoying EarthSky? Subscribe.

218,811 subscribers and counting ...

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

Bruce McClure

MORE ARTICLES