Celestial navigation uses the positions of celestial bodies to determine one’s location on Earth. It requires tools such as a chart, instrument for taking sightings, and a clock. The process is tedious and requires good math skills, but has been largely replaced by GPS technology. Celestial navigation is a form of navigation that involves using […]
Plate tectonics refers to the movement of a planet or moon’s crust, with Earth and Europa being the only known celestial bodies with this feature. Earth’s rocky plates have caused geological features, while Europa’s icy plates could make it habitable. “Plate tectonics” refers to when the outer layer of a celestial body, such as a […]
Celestial objects, including the Sun, Moon, stars, and planets, have been observed for centuries. With the invention of the telescope, new discoveries were made, including the Galilean moons and the elliptical orbits of planets. Modern astronomy has revealed even more objects, such as galaxies and quasars. Google Sky allows anyone to view the night sky […]
The celestial sphere is an imaginary structure used in astronomy and navigation to visualize the relative position of celestial bodies in relation to an observer on Earth. It is not a real object, but its use persists due to its simplicity. It can be visualized as a sphere larger than the Earth, with various celestial […]
The celestial equator is part of the celestial sphere, an imaginary object used to locate celestial objects. It corresponds to the terrestrial equator and is fixed in position, while the observer moves with the rotation of the Earth. The celestial equator’s position in the sky varies depending on the observer’s location, and it is used […]
