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.

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 largest, …

Jan 26, 2026 · The Planetary Society remains an independent, member-funded nonprofit with a global reach, advocating for space exploration, advancing science and technology, and engaging the public …

What’s up in the night sky: February 2026 Our monthly feature focuses on easy and fun things to see in the night sky, including eclipses, supermoons, meteor showers, planetary conjunctions, and more.

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.

Dec 12, 2024 · The Planetary Society took notice. As part of our mission of advancing space science and exploration, we find and support innovative science and technology projects — and according to …

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 the unknown, …

Jun 18, 2025 · Planetary Radio is produced by The Planetary Society in Pasadena, California, and is made possible by our members around the world, united by a shared passion to shape the human …

Mar 7, 2025 · The Planetary Society is deeply alarmed by reports that the White House will propose a 50% cut to NASA’s science activities in the upcoming agency budget request. Such a substantial …