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Learn about our mission to increase discoveries in our Solar System, elevate the search for life beyond our planet, and decrease the risk of Earth being hit by an asteroid.
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Find your place in space
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 Chief Ambassador Bill Nye and become a member of the world’s largest and most effective space advocacy movement.
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You help us defend humanity and prevent asteroid impacts. Donate now to become a Planetary Defender!
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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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Win a Total Solar Eclipse Expedition in Egypt
Enter for a chance to win a 10-day journey through Egypt built around one of the longest total solar eclipses in decades. Use promo code: EGYPT25 for 25% additional entries.
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