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John P. Millis, Ph.D., Guide to Space and Astronomy at About.com
I have to admit I was surprised by the headlines touting the funding of tractor beam technologies by NASA.
I’ve written about this kind of technology before, specifically in the broader context of how tractor beams and energy shields are portrayed in science fiction films like Star Trek. And frankly it’s one of the technologies that I also mark in the “things we will probably never have” category.
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Read more at http://Space.About.com