Ping.
What a waste of money, tractor beams.
NASA build a tractor beam? Eb... have you lost your mind?
No, but if NASA did develope a tractor beam... we could plow at night!
If red X above go to http://1.bp.blogspot.com/_kng9nNTclfs/SipdWZVPqII/AAAAAAAAApg/V5iX99dhM8w/s320/GreenAcres_tractor.jpg or http://www.maggiore.net/greenacres/images/wallpaper4.jpg or http://www.tvchannelsfree.com/tcfcrawler/thumbs/000/139/139467.jpg
Well, it might be a great way to clean up all the little bits of space junk in orbit...
How does a light beam pick something up? Won’t it reflect off of it?
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Respectfully
W.W.SMITH