"Could the universe be caught in an endless cycle of expansion and contraction?" via Unexplained_Mysteries Image Credit: Casey Reed - Penn State University Scientists have speculated over the possibility that our entire universe may have been created in a laboratory. There is so much we don't understand about the universe and the nature of existence that even attempting to comprehend how anything actually exists at all is enough to make your head hurt. While the currently accepted model for the birth of the universe is the Big Bang, we still don't know much of anything about what was around before that, or what triggered the expansion in the first place. Could the universe be caught in an endless cycle of expansion and contraction ? Is our universe one of a multitude of other universes in an overarching multiverse ? We just don't know. In a recent article, Harvard University astronomer Avi Loeb puts forward another possibility - one that doesn't exactly help to explain the nature of