When was roughly 13.8 billion years ago, at least that was when the universe as we know it began. I could link you to the work of physicists, but what they do is to measure how fast various galaxies are retreating from us and work backwards. To appreciate the answer you might need to learn quite a bit of basic science first.
Did I ask the age that science believes the universe to be or did I ask about space, matter, energy and time? IOW, you cannot answer the questions that I asked, correct?
Where, when and how did space, matter, energy and time come into existence and in what sequence, using empirical evidence for your answer?
"Because of the limitations of the laws of science, we can't make any guesses about the instant the universe came into being. Instead, we can look at the period immediately following the creation of the universe."
How the Big Bang Theory Works
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