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Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
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About Us
The Planetary Society

Our Vision
Know the cosmos and our place within it.
Our Mission
Empowering the world's citizens to advance space science and exploration.

Our Work
Explore Space
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“Exploration is in our nature.” - Carl Sagan

Your Role In Space Exploration Starts Now

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Featured Stories

Why NASA Picked SpaceX to Land Humans on the Moon

More about Mars

Can We Make Mars Earth-Like Through Terraforming?

A galaxy that spins in more ways than one

Be A Space Advocate!

Act now to help keep our space program going strong. Make your voice heard and tell our newly elected officials to make space a priority.

The LightSail 2 Mission

LightSail Updates

LightSail 2 Enters Extended Mission Phase

The LightSail Mission

Support the 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

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

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Educate

We expand public knowledge about space.

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Advocate

We shape space policy and fight for future exploration.

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Innovate

We invest in innovative space science and technology.

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Collaborate

We cultivate a worldwide movement for space.

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

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