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.
Sign up for updates, weekly tools, and exclusive opportunities to support space exploration. You may opt out any time. View our Privacy Policy. The Planetary Society is a registered nonprofit organization.
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.
Join CEO Bill Nye and become a member of the world’s largest and most effective space advocacy movement.
Featured Fundraising Campaign
The Time is Now
As a Planetary Defender, you’re part of our mission to decrease the risk of Earth being hit by an asteroid or comet.
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.
Learn MoreGet More Space
Sign up for updates, weekly tools, and exclusive opportunities to support space exploration. You may opt out any time. View our Privacy Policy.