Perhaps the best evidence that special relativity works is the operation of the huge particle accelerators that accelerate subatomic particles like electrons and protons nearly to light speed. The two-mile long electron accelerator near Stanford University in California accelerates electrons until their mass increases as predicted by relativity by a factor of forty thousand at the end of their two-mile journey.

Is this statement refering to a mass increase and not a relativistic increase. Is it saying that mass itself has increased and not strictly the force required for further acceleration. Is it not the force required to accelerate the mass that has increased and in fact not the actual mass? The physicality of the accelerated particle has not changed, only the force required to further accelerate the particle. There is in fact no real increase to the mass only a relativistic increase. Relativistic in relationship to the force and not relativistic to the mass. This mass has not been altered in any way other than that it has been accelerated. From a physical standpoint, the particle itself remains the same size and density and is in no way physically different than it was before, during, or after the acceleration. (in reference to its own structure it remains unchanged - in reference to time and locations in space, these of course have been changed). Absolutely nothing can occur if there is no passage of time. You cannot travel from a location and return to it at the same moment in time, no matter how fast you could travel. For example, you leave the earth at exact midnight of December 31,1999. You have been de materialized into a beam. Your beam departs at a speed equal to 100 trillion times the speed of light. It is impossible for that beam to reach the earth by return flight before the 2000. Events in time occur sequentially. The light horizons from an event are not the event. If the event is say a super-nova, when the nova explodes, the atomic mass of this structure is radically modified. This change occurs over a small period of time. After that explosion over a short time span, comes the light produced from that event. The Actual explosion has ended and the associated light horizon carrying the visual details of that event are shot out at light speed away from the event. Perhaps we are making it a bit too simple in defining an event as a super-nova. An event can only take place at one location. A point source cannot send out a light horizon in all directions. A supernova is many, many events that occur in the near vicinities to one another. Considering this as one event is perhaps a poor logical approach. Einstein's famous formula e = mc2 is used in every laboratory study of a nuclear reaction and is at the heart of the nuclear reactor and fission and fusion weapons. It is an integral part of the special theory of relativity.