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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. 

Replay the live announcement

Read the press release

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Josh Spradling / The Planetary Society

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 Program Wraps Busy Year with Test Readiness Review

Jason Davis • December 17, 2015

On Monday, LightSail engineers and mission managers met at The Planetary Society's Pasadena, California headquarters to prepare for a rigorous suite of spacecraft tests that are expected to begin in January.

In Pictures: LightSail Cameras Prepped for Flight

Jason Davis • November 25, 2015 • 2

LightSail's flight cameras are being prepped for installation after receiving a software upgrade and checkout from their manufacturer.

LightSail Deployer Passes Prox-1 Fit Check

Jason Davis • October 26, 2015

At Georgia Tech in Atlanta, Cal Poly San Luis Obispo engineers loaded a P-POD replica into the partially assembled frame of the Prox-1 spacecraft. The meetup was a fit check to make sure the two pieces of hardware fit together as designed.

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