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Podcast: Universe Today - NASA Tests a Solar Sail 
Universe Today | by info@universetoday.com (Fraser Cain) | Thu, May 12
Imagine a solar powered sail that could propel a space craft through the vacuum of space like a wind that drives a sail here on Earth. The energy of photons steaming from the Sun alone would provide the thrust. NASA and other space agencies are taking the idea seriously and are working on vario...
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