Explore Worlds
Find Life
Defend Earth
The Planetary Society
The Planetary Society has inspired millions of people to explore other worlds and seek other life. With the mission to empower the world's citizens to advance space science and exploration, its international membership makes the non-governmental Planetary Society the largest space interest group in the world.
Carl Sagan, Bruce Murray, and Louis Friedman founded The Planetary Society in 1980. Bill Nye, a longtime member of The Planetary Society's Board, serves as CEO. Learn more about The Planetary Society.
Latest Articles
SpaceX is preparing to launch the first-ever entirely civilian mission — Inspiration4 — into Earth orbit.
Members helped us send letters to the U.S. Congress asking for increased funding for NASA's planetary defense efforts.
A toolkit to help you advocate for the value of exploring space even when there are important problems to be solved here on Earth.