Word: tegmark
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...different universes one particular version of string theory could produce. The number he came up with was a 1 followed by something like 100 zeros--roughly a hundred billion billion times the number of atoms in our universe. It was an answer that didn't please anyone. Says Max Tegmark, a theorist at the University of Pennsylvania: "People have tried very hard to get rid of these multiple universes and failed. They just don't like the concept; they think it's weird. And they're right. But don't we already have good evidence by now that the cosmos...
...asks deep questions about nature but provides unsatisfyingly vague answers. The cosmos may be 12 billion years old, but it could be as much as 15 billion. The stars began to shine 100 million years after the Big Bang, or maybe it's a billion. "Our ideas," acknowledges Max Tegmark of the University of Pennsylvania, "have been kind of wobbly...
...cosmologists won't be sitting around waiting. "You're going to see a thousand papers based on these results," says Tegmark, who is already working on several. "It's an exciting time to be in this field...
...unaided eye, the images are meaningless. A statistical analysis, however, shows that the early lumps--actually patches of slightly warmer or cooler radiation--don't come at random but rather at certain fixed sizes. "It's as though you're studying dogs," says University of Pennsylvania astrophysicist Max Tegmark, "and you find out that they come in just three types: Labrador, toy poodle and Chihuahua...
...when you add Tegmark's "dogs," plus the more esoteric equations of sub-nuclear physics, it turns out that an additional 30% of the needed matter most likely comes in the form of mysterious particles that have been identified only in theory, never directly observed--particles with quirky names like neutralino and axion. These are the mysterious dark matter, or most of it anyway. The cosmic background radiation itself began to shine when the universe was 300,000 years old, but the temperature fluctuations were set in place when it was just a split-second old. "It's pretty cool...
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