The Planetary Society

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The Planetary Fund

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

Forty years of space for everyone

Become A Member

Featured Stories

How to Pick the Perfect Beginner Telescope

Learn about the New Mars Missions

Astronomy for Beginners

Join Our Mission to Defend Earth

As a Planetary Defender, you’re part of the solution in our mission to decrease the risk of Earth being hit by an asteroid or comet.

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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