JOIN TODAY AND RECEIVE A FREE PAIR OF ECLIPSE GLASSES

We just eclipsed our goal of 350 new members! Will you help us meet our new goal of 750 new members by February 29? Change the future of space exploration!

Become A Member
Total solar eclipse showing solar corona

Total Solar Eclipse!

Join us for Eclipse-O-Rama 2024, our two-day camping festival in Fredericksburg, Texas. Featuring music, science, lodging, and more!

Register Today

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.

hand reaching toward planet

Explore Worlds

Increase discoveries about the worlds of our solar system and beyond.

hand pointing to dna

Find Life

Elevate the search for life as a space exploration priority.

fist blocking meteor

Defend Earth

Decrease the risk of Earth being hit by an asteroid or comet.

This content is hosted by a third party (vimeo.com), which uses marketing cookies. Please accept marketing cookies to watch this video.

Join CEO Bill Nye and become a member of the world’s largest and most effective space advocacy movement.

Europa

Featured Fundraising Campaign

The Planetary Fund

Your Planetary Fund support powers our mission to explore worlds, find life, and defend Earth.

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

Get 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.