Eclipses are events that occur when the Moon or the Sun is blocked from view by the other. Lunar ECLIPSES occur when the Earth passes between the Sun and the Moon, blocking the Sun's light from reaching the Moon. Solar ECLIPSES occur when the Moon passes between the Sun and the Earth, blocking the Sun's light from reaching the Earth. Both lunar and solar ECLIPSES can be seen from certain parts of the world, depending on the alignment of the Sun, Moon, and Earth.