When moon comes between sun and earth, a solar eclipse occurs. When moon comes in between sun and earth while revolving around the earth then the shadow of moon falls on the earth and for that time we are not able to see the sun. This event is known as a solar eclipse.
Some part of the earth gets covered by the antumbra and some by the penumbra of moon. The part covered by the antumbra of moon observes complete solar eclipse while the part covered by penumbra observes fractional solar eclipse. At the time of complete solar eclipse, the outer edge of the sun is visible around the moon as a ring and is called the disc of sun.
