SUPPORT A FUTURE FULL OF EXPLORATION
We need 250 new members by February 28. Become a member today and advance real space science.
Join NowFeatured 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.
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.
Donate
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.
Learn More




