LightSail 2 Sends Back 1st Signals from Its Solar-Surfing Test Flight

By Doris Elin Salazar 4 hours ago Spaceflight

The little craft launched atop SpaceX's Falcon Heavy rocket late last month.



Artist's concept of LightSail 2 above Earth.(Image: © Josh Spradling/The Planetary Society)


The space advocacy organization The Planetary Society recently confirmed that its LightSail 2 spacecraft has sent its first signals home from space.

The roughly 11-lb. (5 kilograms) cubesat is designed to prove that solar sailing is a feasible way of keeping satellites moving. Fuel is a costly and heavy commodity, and if LightSail 2 can prove that the solar-powered technique works well, perhaps future missions into the deep reaches of the solar system and beyond can be propelled by the charged particles released by the sun.

The project launched into space last week (June 25) from the Kennedy Space Center in Florida aboard a SpaceX Falcon Heavy megarocket. On Tuesday (July 2), the bread-loaf-size LightSail 2 experiment left Prox-1, its carrier vehicle. LightSail 2 will ultimately open up its ultrathin four-panel sail to achieve a surface area about the size of a boxing ring.

But before that can happen, the Planetary Society team needed confirmation that the spacecraft itself was healthy. That message came on July 2, as the spacecraft was passing over the satellite's mission control at California Polytechnic State University in San Luis Obispo. The signals came from LightSail 2's recently deployed radio antenna, which began transmitting status data and a call sign in the form of morse code, according to LightSail 2 officials.

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