Learn about eclipses
Discover the science of eclipses.
What are the different types of eclipses?
From Earth we can see two types of eclipses: solar eclipses and lunar eclipses. These occur when the Sun, Earth, and moon align in a straight or almost straight configuration. Astronomers call this syzygy!
Why don't we have an eclipse every month?
A 3-D model of the Earth, the moon, and the Sun helps us understand the celestial mechanics of total solar eclipses—and shows us why they happen when they do.
Will there always be total solar eclipses?
Experience this phenomenon from Earth while you still can! In a little more than half a billion years, you will have missed your chance.