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.

Become A Member The Planetary Fund Take Action

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.

Find Life

Elevate the search for life as a space exploration priority.

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.

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

Become A Member

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.

What We Do

How We Work

Our Results

Space Topics

Learn

The Planetary Report

The Year in Pictures

Get Involved