Eclipse
Because the Sun is 400 times larger than the Moon, but nearly 400 times farther away from Earth, the Sun appears to be similar in size to the Moon when we see them in the sky. Thats how it seems possible on occasion for the Moon to cover the Sun for a brief time when it passes between Earth and the Sun. When Sun, Earth and the Moon align in space perfectly it causes what it know a an eclipse. There are tow types of eclipses one is a solar eclipse, and the other is a lunar eclipse. There are between 4 to 7 eclipses every year. total solar eclipse (when only the Sun's outer atmosphere, or corona, is visible) is rare and can on be seen from certain spots on Earth, Partial and annular eclipse the moon is far enough from Earth that it cannot entirely block off the Sun. A lunar eclipse occurs when the Earth casts its own shadow up in the Moon as it passes between the Sun and the Moon. These accur more frequently, last much longer, and can nb seen from anywhere on Earth.
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