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Three different trends in physics each suggest that our universe is just one of many.We usually think of the universe as being “everything there is.” But many astronomers and physicists now suspect that the universe we observe is just a small part of an unbelievably larger and richer cosmic structure, often called the “multiverse.” This mind-bending notion – that our universe may be just one of many, perhaps an infinite number, of real, physical universes – was front and center at a three-day conference entitled "A Debate in Cosmology — The Multiverse," held at the Perimeter Institute for Theoretical Physics...

TIME BEFORE TIME An event like the Big Bang is about as likely as billions of coin tosses all coming up heads. Explaining why that is might take us from empty space to other universes--and through the mirror of time. by Sean Carroll • Posted August 28, 2006 11:53 AM From the SEPTEMBER issue of Seed:    The nature of time is such that the influence of the very beginning of the universe stretches all the way into your kitchen—you can make an omelet out of an egg, but you can't make an egg out of an omelet. Time, unlike...

One universe or many? Panel holds unusual debate March 30, 2006 Special to World Science Scientific debates are as old as science. But in science, “debate” usually means a battle of ideas in general, not an actual, politician-style duel in front of an audience. Occasionally, though, the latter also happens. And when the topic is as esoteric as the existence of multiple universes, sparks can fly. According to one proposal, new universes could sprout like bubbles off a spacetime "foam" that's not unlike soap bubbles. (Courtesy Lawrence Berkeley National Laboratory) Such was the scene Wednesday evening at the American Museum...

Aug. 20 — One morning last April, the New York Times op-ed page ran a piece by the Australian physicist Paul Davies warning readers not to be so gullible as to believe there could be more than one universe. The next month, Scientific American published a long article by the physicist Max Tegmark asserting that, to the contrary, parallel universes almost certainly do exist. Around the same time, bookstores received Are Universes Thicker Than Blackberries?, wherein Martin Gardner dismisses theories of multiple universes as “frivolous fantasies.” If you had seen all this, you may well have asked yourself: Is this...