The Planetary Society creates accessible educational videos to share the passion, beauty, and joy of space exploration. We also regularly host live events.

This content is hosted by a third party (, which uses marketing cookies. Please accept marketing cookies to watch this video.

Solar eclipses explained An eclipse is a celestial event that happens when a planet, a moon, and a star line up in a specific way. When the Moon is in the middle of the lineup, you get a solar eclipse. As the Moon blocks the light of the Sun, a giant Moon shadow covers parts of the Earth, resulting in some astonishing visual experiences.

The Planetary Society Live

Tune in here for live conversations between space experts and Planetary Society members and supporters around the world—that means you! Missed an event? Don't worry, we've got archived shows, too.