Lunar eclipse, umbra and penumbra

Videonummer 11944820
Lunar eclipse. Animation showing the mechanics of a lunar eclipse. During a lunar eclipse, the Moon passes into the shadow of the Earth, causing its visible face to darken. It does not disappear completely as some reddish light is refracted onto it by the Earth's atmosphere. The Earth's shadow comprises a dark central umbra surrounded by the lighter, more diffuse penumbra. A total lunar eclipse can only occur at Full Moon, when the Earth lies directly between the Moon and the Sun. It does not occur every Full Moon as the orbital planes of the Earth and Moon are slightly inclined with respect to each other. A lunar eclipse is visible from everywhere on the night side of the Earth.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / NASA
Modell-Rechte: nicht erforderlich
Länge: 16 Sekunden
Seitenverhältnis: 16:9
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