Hawking's No-Singularity Model In A Brief History of Time , Stephen Hawking presented a new model of a beginningless universe. Hawking does not challenge the idea that the universe is finite in space and time. Consequently, there is no time earlier than 16-10 billion years ago. Nonetheless, if the univese does eventually collapse back into a infinitesimal point, and if we use a mathematical technique known as "imaginary time", we can model space-time as a smooth, uneventful surface, with the Big Bang as the North Pole and the Big Crunch as the South Pole. Hawking's model involves "spatializing" time -- turning time into a spatial dimension, no different from the familiar three dimensions of space. Hence, his model involves a radical rejection of change and becoming: the universe is an unchanging, multi-dimensional whole, given once for all. Change is merely variation along a static dimension. Hawking's model is highly speculative, based on what Hawking believes a quantum theory of
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