If anyone is able, could you please answer these questions.

What do astronomers know of the very center of the universe?

Being the point of the original Big Bang, does it appear to be empty?

Do they even know exactly where it is?

And if it appears that even now it is still spewing out masses of energy that continue filling the universe, after a big Big Bang that came and went some 13 billion years ago - what is happening.
Also, considering that all that was created in the Big Bang is now still actively expanding outward – then logically, there should be a big empty space somewhere around where it originally happened.

It is easy to accept the Big Bang Theory in this expanding universe, but surely the greatest evidence of such an happening should be at the very center of the remains of that explosion. So why do we see or seem to know so little about the center of our universe.

Or am I perhaps missing something.

Please feel free to enlighten me.

Many Thanks.