Solar system montage with eight planets

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

The Space Shuttle Turns 40

The Planetary Society is celebrating the 40th anniversary of the first Space Shuttle launch with exclusive resources, interviews, and personal stories.

Space Shuttle Astronaut Bob Crippen Describes Columbia's First Flight: "A Moment of Pure Excitement"

NASA astronaut Bob Crippen joins Mat Kaplan on Planetary Radio to look back at the Space Shuttle's first flight.

Your Impact: March Equinox 2021

Thanks to our members, we hosted Planetfest '21, advocated for space, and took a big STEP forward with our new sci-tech grants program.