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 …

The Planetary Society is global, independent, nonprofit organization that promotes the exploration of space through education, advocacy, and innovative…

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

Jun 8, 2025 · NASA has four mission-focused science divisions: planetary science, Earth science, heliophysics, and astrophysics. This proposal would slash each division, forcing premature …

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.

Jupiter, our largest planet, teaches us how planetary systems evolve. Its four planet-like moons make it a planetary system of its own. Io, Jupiter’s chaotic volcano moon

How The Planetary Society works to increase discoveries about the worlds of our Solar System and beyond.

3 days ago · Planetary Radio Host and Producer for The Planetary Society The Giant Magellan Telescope (GMT) is poised to become one of the most powerful ground-based observatories …

Jun 9, 2025 · Then, planetary defense began to hit the mainstream. The U.S. Congress instructed NASA to discover 90% of all NEOs beyond a certain size, and around the same time, ground …

For over 4 decades, our members have made strides in advancing planetary exploration, planetary defense, and the search for life beyond Earth. We have delivered tens of thousands …