But it happens that Genesis is exactly right. Time depends on where you are measuring.There is no single "time" for the age of the universe. If you are on earth looking backwards in time, you measure 15 billion years or so. If you are God, describing the age of the universe looking forward from the Big Bang, you will measure 6 days. Science, thousands of earth years after Genesis was written, has provided the tools that confirm the Biblical story. Just do the math or talk to your local physics professor.