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Co-founded by Carl Sagan in 1980, The Planetary Society is a member-funded nonprofit organization dedicated to advancing space science and exploration through three core enterprises.
Join CEO Bill Nye and become a member of the world’s largest and most effective space advocacy movement.
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You are a Planetary Defender!
It's possible to deflect deadly asteroids headed for Earth … but only if we find them in time! You can power the team of astronomers keeping their eyes on the sky to defend Earth.
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Space Policy & Advocacy
Where we stand on the issues
Mars sample return, increasing NASA science funding, advocating for NEO Surveyor, flexibility for Artemis procurement and partnerships, and elevating the search for life beyond Earth. Together we’re active in advancing space science and exploration.
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