View Single Post
mjacobsca
mjacobsca is offline
#8
Jun16-09, 10:43 PM
P: 98
Quote Quote by jnorman View Post
Q2 - in alan guth's wonderful book, the inflationary universe, i think he is inferring that for at least some small period of time, the universe expanded at a speed greater than the spped of light. is that correct? and if so, how could any material of the early universe have moved faster than the speed of light without violating the rule of matter being unable to reach or exceed C? thanks.
Spacetime itself can expand faster than light. However, nothing can move THROUGH spacetime faster than light. Therefore, the bounds of the universe can expand exponentially faster than the speed of light during inflation, and matter that is pulled apart because of the increase of spacetime between particles can move apart from each other faster than the speed of light.