Solar and Lunar eclipses are important keys to political and social events. They are also significant in natal and progressed horoscopes. An eclipse happens when the Sun, Earth and Moon align so that, in a solar eclipse (at the New Moon), the body of the Moon obscures the body of the Sun and in a lunar eclipse (at the Full Moon), the body of the Earth obscures the Moon. In each case the Sun's light is obstructed, causing the eclipse.