Solar system montage with eight planets

The Planetary Society

The Planetary Society has inspired millions of people to explore other worlds and seek other life. With the mission to empower the world's citizens to advance space science and exploration, its international membership makes the non-governmental Planetary Society the largest space interest group in the world.

Carl Sagan, Bruce Murray, and Louis Friedman founded The Planetary Society in 1980. Bill Nye, a longtime member of The Planetary Society's Board, serves as CEO. Learn more about The Planetary Society.

Latest Articles

LightSail 2 Enters Extended Mission Phase

One year after launch, The Planetary Society’s solar sail spacecraft is embarking on an extended mission dedicated to further advancing solar sailing technology.

Your Impact: June 2020 Solstice

We're celebrating a successful Day of Action in Washington D.C., remembering SETI@home, and looking forward to LightSail 2's extended mission.

Pictures of Earth

During this singular moment in history as the entire world responds to the COVID-19 pandemic, we thought it would be appropriate to share some of our favorite pictures of Earth from space.