Occurs when the moon moves into the earth's shadow, causing the moon to darkened. Occurs during a full moon

and can only happen during a lunar eclipse. The earth blocks the sunlight from reaching the moon, creating a shadow on the moon's surface. This phenomenon can be seen from certain locations on Earth and is often accompanied by a reddish hue on the moon, known as a blood moon. Lunar eclipses occur approximately every six months and can be a spectacular sight to witness.