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LightSail

Flight by Light for CubeSats

LightSail® is a citizen-funded project from The Planetary Society. We're sending a small spacecraft, propelled solely by sunlight, to Earth orbit.

In 2015, our LightSail 1 spacecraft successfully completed its test flight mission. LightSail 2 is scheduled to launch aboard a SpaceX Falcon Heavy on June 22, 2019, and we will attempt the first, controlled solar sail flight in Earth orbit.

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The Dream of Solar Sailing - LightSail 2

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

In 2019, LightSail 2 will ride to space aboard a SpaceX Falcon Heavy rocket

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Frequently Asked Questions

Details on everything from the origins of solar sailing to the latest LightSail mission

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LightSail 2 Animation

This animation details the piece by piece construction of the LightSail 2 spacecraft as well as its maneuvers in space.

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