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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.

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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.

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



We expand public knowledge about space.

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We shape space policy and fight for future exploration.

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We invest in innovative space science and technology.

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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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