The expansion of the universe is now seen as one of the great scientific discoveries

The expansion of the universe is now seen as one of the great scientific discoveries

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Unformatted text preview: The expansion of the universe is now seen as one of the great scientific discoveries, and Hubble generally gets the credit. More precisely, however, Hubble established an empirical formula that led the great majority of scentists to believe in the expansion. It is an open historical and philosophical question in what sense Hubble's correlation of data was a "discovery," and exactly how the claim that the universe is expanding grew in scientists' minds. Many observations have confirmed the model of an expanding universe that Hubble's relationship validated. But Hubble should not be judged simply by which of his conclusions are now believed to be correct. More important was the direction he pointed out: using galaxies as a key to cosmic history. Hubble's work should be appreciated for the assumptions it overthrew, and for the vistas it opened, as a...
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