Ultra-fast particles inflated Universe, physicists say By Mike Martin and copyright 2002 United Press International UNIVERSITY PARK, Pa. May 7 (UPI) -- Tachyons -- particles that move faster than the speed of light in defiance of Einstein's strict prohibitions against such amazing speeds -- may be responsible for the inflation that expanded the Universe from zero to trillions of light years in a fraction of a second after the Big Bang. Only a particle that moves at the phenomenal speed of a rolling tachyon, physicists say, could inflate the Universe as quickly as cosmologist Alan Guth first predicted in his...