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Published online 2 February 2001 | Nature | doi:10.1038/news010208-2
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New model of expanding Universe
There are more than two ways to pump up the Universe.
Two American physicists may have identified a fundamental new characteristic of the fabric of space.
Leonard Parker and Alpan Raval of the University of Wisconsin at Milwaukee are revisting what Einstein called his "greatest blunder": the proposal that a mysterious 'cosmological constant' affects the expansion of the Universe1.
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