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→Theoretical Basis
for the relativistic energy of a particle with mass becomes infinite; in other words, an infinite amount of energy would have to put into the particle from the rest of the universe. One's speed can only asymptotically approach the speed of light, but never cross it.
for the relativistic energy of a particle with mass becomes infinite; in other words, an infinite amount of energy would have to put into the particle from the rest of the universe. One's speed can only asymptotically approach the speed of light, but never cross it.
This does not forbid speeds greater than the speed of light. Rather, since the barrier is impassable, such a particle would have to be "born" there. '''Tachyon''' is the name given to such a hypothetical particle.
This does not forbid speeds greater than the speed of light. Rather, since the barrier is impassable, such a particle would have to be "born" there. "Tachyon" is the name given to such a hypothetical particle.
==Evidence==
==Evidence==