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Yeah. The age of the universe is known pretty solidly. Galaxy formation theories on the other hand are still pretty shaky.

• gnaritas 15y ago
  I'm not sure that's at all true. The amount of time since the big bang is certainly well known, but who's to say that actually was the beginning.
  • dedward 15y ago
    Who's to say? It's by definition - the "Big Bang" was the moment when the universe,time and space, came into existence. Neither existed before that. To talk about "before" the Big Bang isn't even correct - there is no "Before".
    • gnaritas 15y ago
      No, the big bang was an event that we know happened, but we don't know that it's when time, space, or the universe came into existence nor is it defined as such. Big bangs could happen over and over. Don't confused the known event, for the theory that it was the beginning, they are different things.