News FocusCosmology

Which Way to the Big Bang?

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Science  28 May 1999:
Vol. 284, Issue 5419, pp. 1448-1451
DOI: 10.1126/science.284.5419.1448

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CHICAGO-- The idea that the universe as we know it was born in a split second of exponential growth is cosmological gospel. But no one can agree on a single version of the theory called inflation. In fact, there now exist so many approaches, with such a wide range of predictions, that a few cosmologists have suggested inflation could never be disproved by observation. Such concerns have prompted the search for alternative theories of creation, whose predictions could be compared with those of inflation (see sidebar).