A U.S. flag flies in the foreground of this image of the moon during the lunar eclipse as seen from Washington, D.C., on Sunday night. J. David Ake/AP hide caption
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The moon rises between two office buildings in Bangkok, Thailand. Lillian Suwanrumpha/AFP/Getty Images hide caption
An Oct. 8, 2014, photo shows the blood moon, created by the full moon passing into the shadow of Earth during a total lunar eclipse, as seen from Monterey Park, Calif. Sky-watchers will get a chance to see another "blood moon" eclipse on Sunday. Nick Ut/AP hide caption
A "blood moon" captured on the night of Jan. 20, 2000. Fred Espenak/NASA hide caption