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The model favoured by Schreck, one that had been in existence for some forty years, placed the planets in orbit around the sun, and the sun and moon in orbit around the earth. Complex though this was, it appeared to a majority of astronomers the one that best corresponded to the available evidence. There were some, however, who preferred an altogether more radical possibility. Among them was a Czech Jesuit, Wenceslas Kirwitzer, who had met Galileo in Rome, and then sailed with Schreck to China, where he had died in 1626. Prior to his departure, he had written a short pamphlet, arguing for heliocentrism: the hypothesis that the earth, just like Venus and the other planets, revolved around the sun.24 The thesis was not Kirwitzer’s own. The first book to propose it had been published back in 1543. Its author, the Polish astronomer Nicolaus Copernicus, had in turn drawn on the work of earlier scholars at Paris and Oxford, natural philosophers who had argued variously for the possibility that the earth might rotate on its axis, that the cosmos might be governed by laws of motion, even that space might be infinite. Daring though Copernicus’ hypothesis seemed, then, it stood recognisably in a line of descent from a long and venerable tradition of Christian scholarship. Kirwitzer was not the only astronomer to have been persuaded by it. So too had a number of others; and of these the most high profile, the most prolific, the most pugnacious, was Galileo.
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