The Planetary Society

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Your role in space exploration starts here.

Sign in to connect with the world's largest community of space enthusiasts.

If you aren't already a Planetary Society member, you can take your place in space today. Join us at planetary.org/membership.

Anyone can join — there’s space for you.

Together, we're on a mission to increase discoveries in our Solar System and beyond, elevate the search for life outside our planet, and decrease the risk of Earth being hit by an asteroid. We do all of this through advocacy, education outreach, scientific innovation, and global collaboration. Become a member at planetary.org/membership.

Welcome to the community.

Whether you access the community on a web browser or through our iOS and Android apps, you'll be connecting, learning, and celebrating the joy of space exploration with other Planetary Society members.

Connect with your fellow members as we:

🥳 Celebrate the big moments in space exploration history

🛰️ Learn more about new missions and exciting discoveries

🚀 Attend exclusive events

🧑‍💻 Take online classes

📢 Advocate for more space exploration

🪐 Share astrophotography, art, and creative work

💬 Chat about your favorite sci-fi books, movies, TV, games, and more!

What people are saying:

“The Planetary Society provides everyone with the opportunity to be a contributing factor in the exploration of the universe. If that doesn’t get you excited, check your pulse.”

 Patrick F., Planetary Society Member

"Thanks to the support of Planetary Society members around the world, we're on the verge of breakthrough precision that will allow for new discoveries."

Dr. Debra Fischer, Yale University astronomer and head of the 100 Earths exoplanet-hunting project at Lowell Observatory

"We need to make sure that we have groups like The Planetary Society always engaged, always interested… I cannot tell you how important it is."

Former NASA Administrator Jim Bridenstine

Join today!

The Planetary Society is the world's largest community of space enthusiasts, started by famed astronomer Carl Sagan and today led by celebrated science educator Bill Nye. We're working together to increase discoveries in our Solar System and beyond, elevate the search for life outside our planet, and decrease the risk of Earth being hit by an asteroid.

Space is vast, and there's a lot of exploring to do! Everyone is welcome. Become a member of The Planetary Society, join our community, and take your place in space today.