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
On October 16, NASA's Lucy spacecraft is expected to depart for the Trojan asteroids — rocky bodies that share an orbit with Jupiter.
A new study says the winds within the famous Great Red Spot are speeding up in some places and slowing down in others.
Planetary protection means protecting other worlds from Earthly microbes and containing possible microbes that sample return missions might bring back to Earth.
The ongoing hunt for Earth-like worlds, especially over the next few decades, hopes to illuminate how ordinary and extraordinary our planet may be.