![]() ![]() How high in the sky the moon is when the eclipse starts depends on one's location. ![]() If you were standing on the moon you would see the Earth block part of the sun's light, but not all of it – you'd have a partial solar eclipse. This means the slight darkening is more noticeable. This eclipse will have a much rarer condition, in which the entire moon will pass into the penumbra, but not the umbra. In the latter case, the darkening of the moon is difficult to see the penumbral shadow only "tints" the moon slightly and if the whole moon isn't covered by the penumbra that slight dimming is overwhelmed by the brightness of the lunar surface. Most of the time the moon either passes through the Earth's darker umbral shadow, creating a partial or total lunar eclipse, or only part of the moon passes through the penumbra. ![]() The inner part, where the Earth blocks all of the light from the sun to the moon, is called the umbra. Unlike a more typical partial or total lunar eclipse, in a penumbral eclipse the moon passes through the outer part of the Earth's shadow, called the penumbra. ![]()
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