Question

who first developed the concept of the celestial sphere for navigation?

Answer 1

Answer:

Celestial navigation, also known as astronavigation, is the ancient and modern practice of position fixing that enables a navigator to transition through a space without having to rely on estimated calculations, or dead reckoning, to know their position. Celestial navigation uses "sights", or angular measurements taken between a celestial body (e.g. the Sun, the Moon, a planet, or a star) and the visible horizon. The Sun is most commonly used, but navigators can also use the Moon, a planet, Polaris, or one of 57 other navigational stars whose coordinates are tabulated in the nautical almanac and air almanacs.

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Answer 2

Answer:

Explain the law of constant proportion of the day of the day of the day of the day of the day of the day of the day of the day of the day of the day of the day