Scientists think the Big Bang happened about 13.8 billion years ago. It was a big event.
"Was it loud?" you might be thinking. Then you would correct your own thought question with a thought answer, "No - sound waves need something to move through - like air, or water, or glass." (and if you were sitting in the cheap seats when the Big Bang happened, you would not have heard a thing.) So much for the pondering, "If a universe forms, and no one is there to hear it, does it make a sound?"
"What about light? was it bright?" you might now be thinking. Yes, there was a lot of energy involved; so yes, there must have been some light.
"Did stuff fly around?" you might be wondering. Yes, a lot of stuff was moving around - and it was moving quickly.
All of this may have you thinking, "How do we know this REALLY happened?" Well, the math works, and we have stuff like red shift going on; but still, I could understand your doubt (or at least your strong desire to get to the facts)
Good news - more math working out - and more evidence that the Big Bang theory holds water. Check this out.
