Eclipses are when the sun doesn't shine to the either the Moon or the Earth because something's blocking the light and is causing a shade. This can only happen if the Moon, Earth, and the Sun are directly lined up, which is very rare. There are two types of eclipses: Solar Eclipse and Lunar Eclipse. Plus, there is also two different positions in a eclipse, the panumbra shadow and the umbra shadow. The umbra will give a total eclipse and the panumbra will give a partial eclipse.

Solar eclipses are when the moon gets in the way of the Earth. This is very rare and will probably happen every 50 year or so. A solar eclipse will only happen during the new moon and will block most of the light in the panumbra and all of the light in the umbra. All you could probably see is the corona of the sunlight if you're watching a total eclipse. The umbra is very small, so not much places will be able to see the the total eclipse.

These are about 50% accurate pictures.

Lunar eclipses are more rare and usually happens once a month. It happens when the moon is directly behind the Earth and is not seen by the Sun. When the light is away, we see a really weird red planet. The umbra is very large, so lots of people can see the lunar eclipse. This eclipse will only happen during the full moon phase.

This is all of the blocking that is happening. As you you can see, the umbra for the solar eclipse is much smaller.

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