NASA news: Space engineer proposes accelerator propelling craft 'close to light speed' | 10/14/2019 | Tom Fish
tiazanne (Posted by) Level 3
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A weight moving along a straight rod will only cause the box it is in to move back and forth along a frictionless surface: there is no forward acceleration.

Instead, Dr Burns proposes pushing a particle accelerator – rather than a weight – back and forth along a helix, with the mass increasing as...
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