Sailors Navigating the Open Ocean and the Use of Astronomy in Mapping Empires

When was it established that the Earth is round? Did the Catholic church help or hinder the practice of astronomy? And how transformative was the big bang theory? Speaking to Spencer Mizen, James Hannam answers your queries on the long history of the study of the heavens.

(Ad) James Hannam is the author of The Globe: How the Earth Became Round (Reaktion Books, 2023). Buy it now from Amazon: https://www.amazon.co.uk/Globe-How-Earth-Became-Round/dp/1789147581/?tag=bbchistory045-21&ascsubtag=historyextra-social-histboty

The HistoryExtra podcast is produced by the team behind BBC History Magazine.

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