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Equatorial mounts allow astronomers to point telescopes at the same celestial object for longer times while compensating for Earth's rotation in an easy way. The axis of an equatorial mount is parallel to Earth's surface when observing stars at Earth's equator – but perpendicular to it when observing from one of Earth's poles.
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.
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.
Medieval artistic representation of a spherical Earth – with compartments representing earth, air, and water (c. 1400) The Erdapfel, the oldest surviving terrestrial globe (1492/1493) The spherical shape of the Earth was known and measured by astronomers, mathematicians, and navigators from a variety of literate ancient cultures, including ...
Ellen Eliza Fitz was born in 1835 in Kingston, New Hampshire.When she was a child, she moved to Massachusetts and grew up in Lynnfield and Newton.She grew to be scholarly and curious, spending most of her time as a teenager translating classical texts, such as the Eclogues of Virgil and publishing poetry. [1]
Editor’s note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter.Get news about destinations, plus the latest in aviation, food and drink, and where to stay. It’s the body of ...
The coveted title of Miss and Mr. Golden Globes dates back to 1963 when Donna Douglas and Eva Six shared the honor. The tradition of the role going to a celebrity kid, however, didn’t start ...
Projects the globe onto eight octants (Reuleaux triangles) with no meridians and no parallels. 1909 Cahill's butterfly map: Polyhedral Compromise Bernard Joseph Stanislaus Cahill: Projects the globe onto an octahedron with symmetrical components and contiguous landmasses that may be displayed in various arrangements. 1975 Cahill–Keyes projection