Final answer:
Dava Sobel includes three facts about astronomy and navigation in her book Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time.
Step-by-step explanation:
Dava Sobel, in her book Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time, includes several facts about astronomy and navigation. Here are three of them:
- Ancient Greeks like Aristotle recognized that the Earth and the Moon are spheres, but they rejected the idea that the Earth moves due to their inability to detect stellar parallax.
- Eratosthenes, an ancient Greek mathematician, measured the size of the Earth with surprising precision.
- Hipparchus, another ancient Greek astronomer, made a star catalog, defined the system of stellar magnitudes, and discovered precession from the apparent shift in the position of the north celestial pole.