Join Donate


LightSail 2

Now Sailing on Sunlight

Mission Control Get Updates

LightSail 2's Legacy

For centuries, people have dreamed of traveling the cosmos using solar sails.

Please accept marketing-cookies to watch this video.

In 2019, The Planetary Society's LightSail 2 will help make that dream a reality by attempting the first, controlled solar sail flight in Earth orbit. The spacecraft was made possible thanks to the generous support of space enthusiasts from around the world.

We're advancing space science and exploration.

Join Us

Please accept marketing-cookies to watch this video.

Come Sail Away

Suit up for the mission! Get your official LightSail 2 gear today.

Shop Now

Sharing and growing the passion, beauty, and joy of space exploration.


We Create

We fund innovative science and engineering projects to discover more about our planetary neighborhood and beyond.

Learn More
government building

We Advocate

We guide space policy and work to ensure NASA has the funding it needs to explore new worlds and improve our own.

Learn More
graduation cap

We Educate

We reach out to people of all ages, inspiring them to understand the cosmos and equipping them with the tools to explore.

Learn More
people at event

"We're changing the world. Are you in?"
- CEO Bill Nye

Sign Up for Email Updates