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Category Archives: celestial navigation
Those who use the placement of stars in the night sky in order to determine where to go to are using a practice called celestial navigation. Ancient peoples noticed the patterns associated with stars in the night sky and were able to study and record them in order to teach the following generations how toContinue reading “What is celestial navigation?” Continue reading → Continue reading →
Before the time of GPS, and all the modern forms of navigation we use today, people used to travel with the stars. Through the use of angular measurements, the sun, moon, planets, and stars could be used to find a position on earth. By looking at the angles between these celestial bodies the horizon, and … Continue reading Celestial Navigation: How Our Ancestors Used to Travel → Continue reading → Continue reading →
Even though astronomers use scales such as arcseconds and arcminutes to measure certain distances between stars, the main tool of celestial navigation, the sextant, is only able to measure arcminutes. The sextant uses reflection in order to find the angle of celestial objects. Traditionally, the sextant has two mirrors. The horizon mirror is stationary and … Continue reading Blog 2: Celestial NavigationContinue reading → Continue reading →
Navigational Compass used in Ming Dynasty image source Before the invention of artificial satellites and development of data transformation, celestial navigation played an indispensable role in human’s exploration and discovery of newfound lands. And in this blog, I would like to introduce some celestial navigating technologies implemented in Zheng He’s treasury voyage, one […] Continue reading → Continue reading →