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LightSail

Flight by light for CubeSats

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LightSail-1 has a launch date! The Planetary Society's solar sailing spacecraft is scheduled to launch aboard the SpaceX Falcon Heavy in April 2016. 

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Josh Spradling

LightSail-1 Mission Trailer

CubeSats are tiny, low-cost satellites that have opened up new avenues of space research for universities and small organizations.

In order for CubeSat applications to reach the next level, the miniature satellites need a reliable form of propulsion for orbital maneuvers and trips beyond our planet. This is where solar sailing—transferring the momentum of photons to a large reflective sail—comes in. The technology was successfully used by Japan’s IKAROS mission in 2010, and NASA’s NanoSail-D test-deployed a CubeSat solar sail in Earth orbit later that year.

In 2016, The Planetary Society’s LightSail program will take the technology a step further. LightSail-1 will attempt to demonstrate controlled solar sailing—flight by light—for CubeSats.

Project updates

LightSail Launch Event

Richard Chute • May 21, 2019

LightSail 2’s launch window opens on June 22, and we are finalizing plans for our launch viewing celebrations. Once we have finished coordinating the details with the Air Force’s STP-2 mission team and the Kennedy Space Center, we will share them with all of our members and backers so that you can join us in person or remotely via the internet.

LightSail 2 set to launch next month aboard SpaceX Falcon Heavy rocket

Jason Davis • May 13, 2019 • 2

The Planetary Society's solar sail spacecraft will lift off 22 June 2019 on a mission to demonstrate the power of sunlight for propulsion.

LightSail 2 Integrated with Prox-1 Carrier Spacecraft

Jason Davis • May 09, 2019 • 2

The Planetary Society's solar sailing CubeSat is officially on the road to launch.

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