Very brief and awfully arcane
In his popular book and television series of 1980, Cosmos, astronomer and author Carl Sagan includes a chapter/episode on Aristarchus of Samos, an ancient Greek scientist. In the 3rd century BC, Aristarchus conceived the heliocentric model of our solar system, meaning the Earth and other planets revolve around the sun. We know this because Archimedes informs us of Aristarchus’s accomplishment in one of his scientific publications written about a century later. Aristarchus was not able to convince many of his contemporaries, however, and, like much of ancient Greek scholarship, his work was forgotten for centuries, only to be rediscovered in the Renaissance. In 1543, the Polish astronomer Nicolas Copernicus established and mathematically proved the heliocentric model in his publication On the Revolutions of the Celestial Spheres, and the rest, as they say, is history. In Sagan’s summary of Aristarchus’s career, his heliocentric theory was only one of the ancient Greek’s precocious discoveries. In many ways he was a scientist way ahead of his time.
A desire to learn more about this interesting character led me to The Copernicus of Antiquity, published in 1920, a brief biography of Aristarchus of Samos by Sir Thomas Heath. This book is only about 60 pages long, and the biography is further shortened by the fact that only the second half of the book is actually about Aristarchus. The first half of the book is a brief recap of earlier Greek astronomers and their discoveries, including such ancient cosmographers as Thales, Pythagoras, Plato, Aristotle, and roughly a dozen others.
The Copernicus of Antiquity was published in a series of books entitled Pioneers of Progress: Men of Science, published by the Society for Promoting Christian Knowledge in London. It was likely adapted from an earlier, more extensive book by Heath from 1913. I would assume the Men of Science series was intended for a general non-academic reading audience, but this book certainly isn’t written that way. A great deal of prior knowledge is assumed on the part of the reader. Heath writes as if he expects his audience to have read much ancient scientific literature in the original Greek. He also expects the reader to have memorized all of the mathematical operations in The Elements, Euclid’s classic book on geometry. Granted, many college students of 1920 would have studied Greek, but most were neither professional classicists nor mathematicians. While it’s a well-known fact these days that the Earth is 93 million miles from the Sun, few, if asked, could conjure up the angle at which the Sun subtends the zodiac circle, but Heath writes as if this and many similar astronomical measurements were common knowledge. The book is full of complex mathematical computations that will be over the head of curious casual readers.
Of course, the fault is probably not with Heath but rather with whoever edited the Pioneers of Progress series. They took a full-length scholarly monograph intended for classical philologists and mathematicians and condensed it down to a pamphlet size, but they didn’t adjust the content for a pamphlet audience. I learned much more about Aristarchus from Sagan’s chapter in Cosmos than I did from this book by Heath. With the exception of a few facts here and there, I found it a waste of time. If an overview of ancient Greek astronomy is what you’re looking for, undoubtedly better texts exist than this.











