... Lemmon SkyCenter , U. Arizona Explanation: Why would a bright full Moon suddenly become dark? Because it entered the shadow of the Earth. ... That eclipse , visible from the half of the Earth then facing the Moon, was captured in numerous spectacular photographs and is depicted in the above time lapse video covering about an hour. ... Lemmon Sky Center in Arizona , USA , keeps the Earth shadow centered and shows the Moon moving through it from west to east. ... NASA Official: Jay Norris. ...