Maybe not quite as fictional a construct as once believed?
For those of you who are not science fiction readers, the “warp drive” (under whatever name) is one of two standard devices used by science fiction stories that postulate civilizations across multiple star systems. The other standard device is the “worm hole”. Both of these are used to get around the awkward relativistic restriction against traveling faster than the speed of light. Readers are basically asked to accept these magical devices in order to make the stories' plots work.
Well, maybe the warp drive isn't quite as impossible as physics once told us it was. NASA is working on one. Really!
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