4 ms·

You're also talking as though the "big bang" is proven.

• danbruc 12y ago
  Depends on how narrow or broad you interpret the term. I would say back to the origin of the cosmic microwave background 380,000 years past the big bang the story is pretty well understood. Back to ten to the minus thirty two seconds the model still looks reasonable to me. The time before that makes me feel uneasy, inflation looks to ad hoc to me as a laymen. And I really don't believe there was some kind of singularity with infinite density at the very beginning, but I doubt many do. You can of course never prove something in science but the model seems to provide a reasonable explanation of our observations. There are of course definitely issues and things not yet understood and other things may turn out to be incorrect but that is the nature of science.