In his controversial book The End of Science, John Horgan suggested that the era of great scientific discoveries is over: Exploring the solar system or the human genome may keep us busy for a while, but our findings probably won't require the invention of radical new theories on a par with those of Copernicus, Darwin or Einstein. After all, how much has happened in astronomy since the work of Edwin Hubble in the 1920s, or in genetics since James Watson and Francis Crick's description of DNA in the 1950s, to fundamentally change the way we see the universe and our place in it?

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