40th anniversary logo

Forty years of space for everyone

Become A Member

Featured Stories

Advance Science and Exploration

As a space advocate, you’re part of the most exciting time in space exploration in 50 years.

Donate Today

The LightSail 2 Mission

Carl Sagan co-founded The Planetary Society to give you a role in space exploration.

Join CEO Bill Nye and the world’s largest and most effective space advocacy movement.

Become a member

Please accept marketing-cookies to watch this video.

Sharing and growing the passion, beauty, and joy of space exploration.

lightbulb

Educate

We expand public knowledge about space.

Learn More
megaphone

Advocate

We shape space policy and fight for future exploration.

Learn More
rocket

Innovate

We invest in innovative space science and technology.

Learn More
hands holding earth

Collaborate

We cultivate a worldwide movement for space.

Learn More
people at launch event

"We're changing the world. Are you in?"
- CEO Bill Nye

Sign up for email updates