Ferengi smugglers shake in their boots as the first step towards tractor beams is announced. In the past, lasers have been used only to impart forward momentum to their targets. They hit objects with photons, and those objects move forward with the beam of light (or burst into flame). Now scientists in Hong Kong have figured out how to use a special kind of laser to pull objects toward the laser's source.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/64oQIVAsUyc/could-we-be-on-the-verge-of-inventing-tractor-beams
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