Join Donate

Home

LIVE TODAY

LightSail 2 Sail Deployment
Coverage starts at 11:20am PDT

Please accept marketing-cookies to watch this video.

Our crowdfunded spacecraft is ready to set sail in space. Join us as we begin to deploy the sails that will enable flight by light. Go LightSail!

Read the live blog

Please accept marketing-cookies to watch this video.

Apollo at 50

Half a century has passed since humans first set foot on the Moon. Explore the achievements of Project Apollo.

Read More

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.

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

lightbulb

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 launch event

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

Sign Up for Email Updates