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.

What’s up in the night sky: January 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.

We provide free, accessible information to the public like our weekly radio program and podcast Planetary Radio, videos, articles, social media, The Planetary Report magazine, public events, and …

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

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 …

Jan 9, 2026 · This is our nation’s highest-priority planetary science mission according to the 2023 Planetary Sciences Decadal Survey and is critical to paving the way for eventual exploration of the …

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.

The Planetary Society is working to change the launch date to 2029. ESA's EnVision will launch no earlier than 2031 to investigate Venus' atmosphere and overall structure.

Planetary Radio looks back at the biggest space exploration stories of 2025, from stunning images and major missions to hard lessons about how science moves forward.

Mar 7, 2025 · With a global community of more than 2 million space enthusiasts, The Planetary Society is the world’s largest and most influential space advocacy organization.