[thinktwice]

Her metaphisics say that the only truth that exists is what we may find through objectivist means.

In actuality, humans using reason are discovering, revising or disproving truths every day; that includes truths that didn't exist yesterday, and revision or negation of some truths that did exist yesterday ("The earth is the center of the universe," for instance).

Ayn Rand simply states that truth is the recognition of reality, that man's standard for knowing reality is reason, that reality is that which exists, and that which exists is concrete.

Truth, as such, is an abstraction; and you are reifying truth when treating it as a material concrete.

reify ... to treat (an abstraction) as substantially existing, or as a concrete material object -- reification: n

[unspun]

No, truth is always truth, or it wouldn't be truth.

If I may give you the news, if evidence exists that prove that the earth never has been the center of the universe, it never was, no matter who believed it.

Nothing I've said would infer that I believe that truth is concrete, in natural terms. It is universal (or it is not truth). One's inclination to counterintuitively believe otherwise indicates one's fallacy.