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A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but, unlike maps, they do not distort the surface that they portray except to scale it down. A model globe of Earth is called a terrestrial globe. A model globe of the celestial sphere is called a celestial globe.
Terrestrial terminator-based hemispheres: Earth may be split into hemispheres of day and night by the terrestrial terminator, which is the boundary between the illuminated and dark sides of the planet. This division changes continuously as Earth rotates.
Visualization of a celestial sphere. In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth.All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer.
Find a globe in your local library or classroom and try this: Close the eyes, spin it and drop a finger randomly on its curved, glossy surface. In the age of Google Earth, watches that triangulate ...
This page was last edited on 19 September 2014, at 20:19 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Earth's interior, like that of the other terrestrial planets, is divided into layers by their chemical or physical (rheological) properties. The outer layer is a chemically distinct silicate solid crust, which is underlain by a highly viscous solid mantle.
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