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> Lunar eclipse diagram

Lunar eclipse diagram

author: F.Espenak/Novapix

reference: a-lun70-99000

Image Size 300 DPI: 25 * 16 cm

An eclipse of the Moon (or lunar eclipse) can only occur at full Moon, and only if the Moon passes through some portion of the Earth's shadow. The shadow is actually composed of two cone-shaped components, one nested inside the other. The outer or penumbral shadow is a zone where the Earth blocks part but not all of the Sun's rays from reaching the Moon. In contrast, the inner or umbral shadow is a region where the Earth blocks all direct sunlight from reaching the Moon.

Keywords for this photo:

ASTRONOMY - EARTH - ECLIPSE - FULL MOON - ILLUSTRATION - LUNAR ECLIPSE - MOON - SATELLITE - SUN - TOTAL ECLIPSE -