Major pillars of the Christian Faith are now known to be Mythical, the 6 days creation, garden of eden, the Flood story, Exodus, Joshua's conquest of Judea are pure myth. Even the tales of King David are now known to be at least mostly if not completely myth, and the current research on Jesus and even Mohammad is moving in that direction as well.
Actually, there's archeological evidence of many of those things. In fact, there's a theory of physics that says something like not only is the Universe expanding, but so is time. So, the creation timeline is true in a sense and we are only on the 8th or 9th day. Wish I could remember what the theory is called, but it wasn't proposed by a Christian TTBOMK.
Genesis describes literal days, morning, evening, day one, day two, etc, which does not translate into epochs or astronomical units.
Genesis is an ancient people's attempt at making sense of the world and their place in it, their god, their laws, their identity as a people.
