This is a diagram of a typical solar eclipse. During a total solar eclipse, the umbra reaches the Earth. During an annular eclipse, it does not. An eclipse occurs when the Moon passes in the path of the Sun and Earth.
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Solar Eclipses
An eclipse of the Sun occurs when the Earth passes through the moon's shadow. A total eclipse of the Sun takes place when the Moon is directly between the Sun and the Earth. When a total eclipse does occur,
the Moon's shadow covers only a small portion of the Earth.
In ancient times, people were frightened by solar eclipses. Now eclipses are of great interest to the public and to solar astronomers. If you ever get to view a solar eclipse, make sure to never look at the Sun directly! Always use one of these safe viewing devices.
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