Thanks (I think) for the link. The explanation makes sense, but only if the assumption is made that it is possible to approach such high percentages of the speed of light. Of course, any increase in speed adds energy to the moving object. At even 0.25C, the amount of energy a small object (like a paper clip) would have would be astronomic.
This is why NASA watches for near-space objects that could strike Earth. At the speeds of such things as comets, the energy stored in the object would devastate large portions of our planet.
Not intending to be an alarmist, but that's the reality of the thing.
In Honor of the Queen!
John Fairbairn, KCE, MP
Communications, Project Lead
HMS Lodestone (DD-64)