(Slate::Bad Astronomy) – Phil Plait:

If all goes well, the Planetary Society will test a new technology that could open up a new way to explore the solar system. On board a United Launch Alliance Atlas V is a tiny cubesat, a parallelepiped just 10 x 10 x 30 centimeters in size – roughly the same size as a loaf of sandwich bread.

Packed into that tiny enclosure is a prototype called LightSail, a spacecraft that carries no fuel. Instead, it will use sunlight to propel it. …




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