FILE - The moon shines on the ancient Parthenon temple on Acropolis hill in Athens on Wednesday, Aug. 9, 2006. Through the millennia, humans have asked: How did everything come into existence? Modern ... more 
FILE - The moon shines on the ancient Parthenon temple on Acropolis hill in Athens on Wednesday, Aug. 9, 2006. Through the millennia, humans have asked: How did everything come into existence? Modern science's answer is the Big Bang Theory, which posits that the universe sprang in an instant from a sub-atomic fragment. The ancients, however, did not have $900 million machines to plumb the secrets of the universe. In the 4th century BC, the Greek philosopher Aristotle posited the world always existed, at the center of the universe. (AP Photo/Petros Giannakouris) less 
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Associated Press | Photo By Petros Giannakouris
Thu, Mar 21, 2013 4:19 PM EDT