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An elegant, 400-year-old means of navigating the stars takes flight.
17 June, 2019
Image source: Planetary Society
- The Planetary Society is about to launch LightSail 2, a crowdfunded light sail craft.
- LightSail 2 uses photons from the sun as fuel.
- Space X's Falcom Heavy rocket will carry LightSail 2 aloft, 720 kilometers up.