The Big Bang a Big Bust ?

Here is the definition of the Big Bang theory:

"The Big Bang Theory is the dominant scientific theory about the origin of the universe. According to the big bang, the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions."

It says the "universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion". So that means there was no universe, no life, just absolutely nothing at least as far back as 20 billion years ago prior to some sort of explosion. The 2nd law of thermodynamics states that matter has always been in existence and more cannot be created. So it is the Big Bangists who contradict science by saying THERE WAS NOTHING and suddenly a cosmic explosion happened that sent matter flying everywhere. Plus, as I have pointed out before recently which not surprisingly no one replied to, there is another huge hole in this theory big enough to push Jupiter through. Big Bangists believe that the universe happened around 13.7 billions years ago. But it's been observed by the Hubble Space Telescope that the universe has an observable radius distance of 46.5 billion light years. But since the universe is 13.7 billions years old, shouldn't the distance be no more than 13.7 billion light years ? No the universe has been measured or to the extent the Hubble Space Telescope allow us to see to be 46.5 billion light years meaning matter must have traveled faster than light which is impossible!