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Would you have deduced that stars are distant suns if you'd lived in the ancient world? Apparently the only pre-modern people (i.e. pre-Giordano Bruno) recorde
by optimalsolver 2y ago
Would you have deduced that stars are distant suns if you'd lived in the ancient world?
Apparently the only pre-modern people (i.e. pre-Giordano Bruno) recorded as making the claim were Anaxagoras, and Aristarchus of Samos, but their ideas were completely rejected by contemporaries.
In retrospect, it just seems so blindingly obvious that I'm tempted to believe that I too would have seen through the Aristotelean BS. But surely there must be aspects of reality that will seem similarly obvious to future generations, and yet I don't feel any insights coming on.
I should say, Aristarchus is the ideal of maximizing information from minimal data:
>Aristarchus of Samos (Samos is a Greek island in the Aegean Sea) lived from about 310 to 230 BC, about 2250 years ago. He measured the size and distance of the Sun and, though his observations were inaccurate, found that the Sun is much larger than the Earth. Aristarchus then suggested that the small Earth orbits around the big Sun rather than the other way around, and he also suspected that stars were nothing but distant suns, but his ideas were rejected and later forgotten, and he, too, was threatened for suggesting such things
http://solar-center.stanford.edu/FAQ/Qsunasstar.html http://solar-center.stanford.edu/FAQ/Qsunasstar.html
- dr_dshiv 2y agoA Pythagorean. The pythagoreans taught that there were 10 celestial bodies, but they could only observe 9, so they proposed a counter earth that could not be seen — behind the sun. Aristotle mocks them for this idea, but the idea implies rotation around the sun.
- fph 2y agoDoes it? If the sun were rotating around the Earth, there could still be another planet behind it, rotating synchronously with it. At least from the point of view of the Greek, who didn't know how gravitation works in detail.
- dr_dshiv 2y agoPossibly. But I believe the mechanism for the movement of the planets was believed to be crystal spheres. Another possibility is that the Pythagoreans actually described the earth rotating around a central fire or Hestia. If that wasn’t the sun, it might have been the center of the earth — and the counter earth was actually the antipodes. When you see the source texts describing these things, it is terribly vague. Yet, Copernicus described himself as bringing back the Pythagorean ideas—