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Set B3 - Out Into Space - card information

4. Eclipse of the Moon

4. Eclipse of the Moon

The Moon is eclipsed when the Earth is in a direct line between the Sun and Moon, and the Earth's shadow covers it. This can only occur at Full Moon. Even when the Moon is totally shadowed it may still be observed because sunbeams which have touched the edge of the Earth have been refracted by the Earth's atmosphere and turned inwards into the shadow, illuminating the Moon with a coppery colour. This is due to the great thickness of atmosphere through which sunbeams pass. Colour effects at sunset are from the same cause.