This is when one celestial body — such as the moon or sun — moves into the shadow of another body. When the moon passes in front of the sun, it casts its shadow on the Earth. This causes a solar eclipse. During a lunar eclipse, Earth gets between the sun and the moon and casts its shadow over the moon. From Earth, the moon appears red. In a total eclipse, one object appears to be completely blocked by another. A partial eclipse leaves a part of the sun or moon visible from Earth.
In a sentence
A total solar eclipse occurs only about 75 times in every 100 years!