During a partial lunar eclipse, the moon is in the _____ region of Earth's shadow.
A partial lunar eclipse occurs when the Earth comes between Sun and Moon but the centres of these three celestial bodies do not lie in a straight line in space. When that happens, a small part of the Moon's surface is covered by the darkest, central part of the Earth's shadow, called the umbra. The rest of the Moon is covered by the outer part of the Earth's shadow called the penumbra.