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What near light-speed travel would do to time, mass and distance?
A spacecraft traveling at 99 percent the speed of light toward Alpha Centauri would cross 4.3 light-years in what feels like ...
Speed alone may be the factor that draws many sports fans to the bobsled, luge and skeleton events at this year's Beijing Winter Olympics. But beneath the thrilling descents of the winding, ...
Sara Imari Walker receives funding from the National Aeronautics and Space Administration and the John Templeton Foundation relevant to the work in this article. She is also a member of the External ...
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