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27 illustrations
On the night of January 7, 1610, Galileo Galilei pressed his eye to a telescope in Padua, Italy, and aimed it at Jupiter. What he...
In 1929, astronomer Edwin Hubble sat in the observer's chair of the 100-inch Hooker telescope at Mount Wilson Observatory, perched above Pasadena, California. For years...
In the spring of 1905, a twenty-six-year-old patent clerk sat at his desk in the Swiss Federal Patent Office in Bern, reviewing applications for electromagnetic...