Where did we come from? Are we alone in the Universe? We can only answer these questions by exploring the planets and other worlds of our Solar System and beyond. Learn why these worlds are so important, and how you can get involved.
Saturn's largest moon, Titan, is both the only other place in the Solar System with liquid on its surface and the only moon with a thick atmosphere, making it a tantalizing destination to search for life.
What is a Planet?
It's right there in our name: The Planetary Society. But what is a planet? This seemingly simple question is the subject of much debate.Learn More
A handy guide to help tease apart the differences between asteroids, comets, meteors, meteorites, and meteoroids. e
Cameras on our space probes act as proxies for our own eyes, but what they see isn't necessarily what our eyes would see.
An explainer on planetary conjunctions, and what it means when a planet is at conjunction or at opposition.
Here's a simple and safe way to observe solar eclipses that's appropriate for young children, with no eclipse glasses or other special equipment needed.