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 …

Dec 20, 2024 · As the anniversary of the Tunguska Event, Asteroid Day is the United Nations-sanctioned day of public awareness around planetary defense and the risks that asteroids …

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

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.

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

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 …

For over 4 decades, our members have made strides in advancing planetary exploration, planetary defense, and the search for life beyond Earth. We have delivered tens of thousands …

Jun 8, 2025 · No planetary spacecraft, space telescopes, or Earth science missions existed. The Apollo lunar program was nonexistent. Such was the NASA of 1961. And so now is the budget …