Given a universe that is objective you do only have one truth. Of course you can have many different perspectives. Imagine a wall that is painted black on one side and white on the other. People living on one side of the wall will claim that the wall is white , on the other side the folks will say, nope, this wall is black. Neither of these folks are being subjective, they are giving valid information. They are both correct , they just don't have a view of the whole truth.
Or depending on how they make their claim, speaking of the whole wall, theyre both wrong.