- Campus of the University of Washington (Wikipedia)
The Campus of the University of Washington is located in the University District of Seattle. Campus buildings are categorized by the major street or vicinity on which they are located on campus. In 2011, Slate magazine and Travel+Leisure described the Seattle campus as one of the most beautiful university campuses in the United States.
- Celestial sphere (Wikipedia)
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. If centered on the observer, half of the sphere would resemble a hemispherical screen over the observing location.