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"An Eclipse is an interception or obscuration of the light of the sun, moon, or other heavenly body by the intervention of another and non-luminous heavenly body or by its shadow."—(Charles Leonard-Stuart, 1911)

Eclipse

"An Eclipse is an interception or obscuration of the light of the sun, moon, or other heavenly body…

Eclipse of the Moon. S=Sun, E=Earth, M=Moon

Eclipse of the Moon

Eclipse of the Moon. S=Sun, E=Earth, M=Moon