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 …

We connect with planetary exploration experts from around the world to strengthen our work and support international exploration efforts. Our 50,000+ international membership makes us the …

They established The Planetary Society to give anyone from anywhere in the world an active role in advancing space exploration. Today, The Planetary Society continues this work, under the …

The latest stories from The Planetary Society, featuring humanity's quest to explore worlds, find life, and defend Earth.

What’s up in the night sky: December 2025 Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, …

Together with our members and supporters, we’re on a mission to explore worlds, find life off Earth, and protect our planet from dangerous asteroids. Join us at planetary.org.

Apr 30, 2025 · If you love the show, you can get Planetary Radio T-shirts at planetary.org/shop, along with lots of other cool spacey merchandise. Help others discover the passion, beauty, …

Oct 1, 2024 · The Planetary Society strongly objected to this retreat from planetary science, a situation characterized by other experts at the time as a “fade to black” for U.S. exploration of …

Mar 28, 2025 · But it is for moments like these that The Planetary Society exists. There is something innately human about joining together for a greater purpose, looking for meaning in …

5 days ago · The Planetary Science Caucus, now in its second year, is officially reorganized and has hit the ground running; organizing against the devastating proposed cuts and rallying …