NASA will unfurl a 860-square-foot solar sail from within a microwave-sized cube

NASA hitched a ride aboard Rocket Lab’s Electron Launcher in New Zealand yesterday evening, and is preparing to test a new, highly advanced solar sail design. Now in a sun-synchronous orbit roughly 600-miles above Earth, the agency’s Advanced Composite Solar Sail System (ACS3) will in the coming weeks deploy and showcase technology that could one day power deep-space missions without the need for any actual rocket fuel, after launch.

The fundamentals behind solar sails aren’t in question. By capturing the pressure emitted by solar energy, thin sheets can propel a spacecraft at immense speeds, similar to a sailboat. Engineers have already demonstrated the principles before, but NASA’s new project will specifically showcase a promising boom design constructed of flexible composite polymer materials reinforced with carbon fiber.

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Source: Popular Science

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