Stand by the launch: The world's 1st orbiting light sail

An elegant, 400-year-old means of navigating the stars takes flight.

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.
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