Speed of light (Score 1)

The article says we can only see 13,7 billion light years into our local bubble of space because of the limits of the speed of light. The same limit also applies to gravitation. If we can see the effects of some unknown gravitational source on light that has travelled for 13,7 billion years we should also be able to see the effect of this source of gravitation everywhere in a bubble with a radius of 13,7 billion lighyears around the objects we observe. That is: we should experience this source of gravitation locally (allthough it might be much weaker). There is also some confusion, I think, about the difference between time and distance. We measure distance as a function of time because of the constant speed of light, but this is not the same thing as actual distance. The actual size of the universe we observe is more like 78 billion light years, based on the particle horizon which is the distance to the farthest particle that we somehow can observere today.