Physics professors I have had (including Dr. Feynman in 1962) contend that an infinite universe would produce a fairly uniform "glow" from our point of view, which is not present. This seems to be contradicted by a few simple factors:
- The light from a star reaching the earth decreases as the cube of the distance, so light from sufficiently distant stars would have an ever decreasing probability of reaching us and as the distance increases approach zero.
- As the distance from earth increases, there is an ever increasing probability that light producing objects would be blocked by non light producing objects (planets, etc.).
- The light from some distant stars can also be blocked by nearer stars.
- Some light from distant stars can be absorbed by nearer black holes or scattered by gravitation effects and not reach us.