Your Role In Space Exploration Starts NowBecome A Member
Exploration Changes Everything
Take action today to keep space science going strong. You can double your impact as a Space Advocate when you make a gift today.Donate
The LightSail 2 Mission
Carl Sagan co-founded The Planetary Society to give you a role in space exploration.
Join CEO Bill Nye and the world’s largest and most effective space advocacy movement.Become a member