Lets do some basic logical thought here. walk through this with me, okay?

Universe = 15 billion years old.
Earth = 4.5 billion years old.

If our solar system is at the center of the universe, it will be as old as the universe itself.

For example; The sun is at the center of our solar system, which requires it to be as old as our solar system.

edit: and if you can't understand what I'm trying to do with this statement, then I dunno what to say for you.

But I'll tell you what i'm trying to do! I'm pointing out the ambiguity and lack of any real knowledge.

Less than 100 years ago people thought the Earth was 20 million years old as far as the science community goes.