what is a lunar eclipse?

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Nature

A lunar eclipse is an astronomical event that happens when the Moon moves into the Earth's shadow, causing the Moon to darken. This occurs when the Sun, Earth, and Moon are closely aligned, with the Earth positioned directly between the Sun and the Moon during a full moon. As a result, the Earth's shadow falls on the Moon, which can make the Moon appear reddish in color during a total lunar eclipse due to sunlight being filtered and refracted through Earth's atmosphere. Lunar eclipses can be seen from anywhere on the night side of the Earth and come in three types: total, partial, and penumbral, depending on how much of the Earth's shadow covers the Moon.