Co-founded by Carl Sagan in 1980, The Planetary Society is a member-funded nonprofit organization dedicated to advancing space science and exploration through three core …

They established The Planetary Society to give anyone from anywhere in the world an active role in advancing space exploration. Today, The Planetary Society continues this work, under the …

We connect with planetary exploration experts from around the world to strengthen our work and support international exploration efforts. Our 50,000+ international membership makes us the …

Together with our members and supporters, we’re on a mission to explore worlds, find life off Earth, and protect our planet from dangerous asteroids. Join us at planetary.org.

Explore the membership options of The Planetary Society and join fellow space enthusiasts in advancing space science and exploration.

The latest stories from The Planetary Society, featuring humanity's quest to explore worlds, find life, and defend Earth.

What’s up in the night sky: October 2025 Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, …

Planetary Radio explores visionary ideas from NASA’s Innovative Advanced Concepts Symposium. In this first of two episodes, discover how researchers are turning science fiction …

It operates the Chinese lunar and planetary exploration programs, organizes international collaborations, directs scientific research, and helps develop China’s space industry.

The Planetary Science Caucus is a bipartisan, bicameral congressional caucus dedicated to the promotion of planetary science and exploration, increasing…