![]() ![]() It is in this context that the Ottoman sultan Murad III ordered the construction of a large observatory in Constantinople superior to the Ulugh Beg observatory and equipped with mechanical clocks. Printing secured two important elements of Big Data: preservation of controlled copies and availability to a larger number of users.Īstronavigation was already used in the 15th century by the Portuguese, Arab, and Chinese navigators, but proved to be very risky during the first intercontinental explorations. At the same time, the printing technology allowed the diffusion of the astronomical writings and was followed by a real explosion of the number of publications ( Houzeau and Lancaster, 1887). All these necessitated better star catalogues and planetary ephemerides. The 16th century was marked by three important evolutions: the generalization of open sea navigation using astronomical positioning techniques, the appearance of accurate mechanical clocks, and the development of astrology. Christian Muller Dr, in Knowledge Discovery in Big Data from Astronomy and Earth Observation, 2020 2.1.2 The Printing and Technological Renaissance Revolution
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