Going green.(Letter to the Editor)

Publication: Natural History

Publication Date: 01-OCT-05

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COPYRIGHT 2005 Natural History Magazine, Inc.

In his excellent article on the future of space travel, ["Heading Out" (7-8/05)], Neil deGrasse Tyson described some, but not all, of the new "green" space-propulsion technologies. One further possibility is the electrodynamic tether (ET), a thin cable that generates a current when it is pulled through a magnetic...

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