- The Planetary Society
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 enterprises
- About Us - The Planetary Society
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 leadership of CEO Bill Nye, as the world’s largest and most influential non-profit space organization
- Explore Worlds - The Planetary Society
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 largest, independent space advocacy organization in the world
- Night Sky | The Planetary Society
What’s up in the night sky: December 2025 Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, and more
- Articles - The Planetary Society
The latest stories from The Planetary Society, featuring humanity's quest to explore worlds, find life, and defend Earth
- The Planetary Society
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
- Membership | The Planetary Society
Explore the membership options of The Planetary Society and join fellow space enthusiasts in advancing space science and exploration
- Save NASA Science - Action Hub | The Planetary Society
The Planetary Science Caucus, now in its second year, is officially reorganized and has hit the ground running; organizing against the devastating proposed cuts and rallying bipartisan congressional support for NASA’s science missions
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