What is an eclipse in short sentences

An eclipse is a celestial event. It occurs when one astronomical body passes in front of another, blocking its light. There are two types of eclipses: solar and lunar. A solar eclipse happens when the moon passes between the sun and Earth, blocking the sunlight. A lunar eclipse occurs when the Earth comes between the sun and the moon, causing Earth's shadow to fall on the moon. Eclipses can be partial, total, or annular, depending on the alignment of the bodies involved.