Advance space exploration
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.
Featured Stories
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.
Explore Worlds
Increase discoveries about the worlds of our Solar System and beyond.
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Join CEO Bill Nye and become a member of the world’s largest and most effective space advocacy movement.
Featured Fundraising Campaign
Support our core enterprises
Your gift today will go far to help us close out the year strong and keep up our momentum into 2026.
DonateSpace 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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