In astronomy and navigation, the celestial sphere is an imaginary sphere of arbitrarily large radius, concentric with a particular celestial body. All objects in the observer’s sky can be thought of as projected upon the inside surface of the celestial sphere, as if it were the underside of a dome or a hemispherical screen. The celestial sphere is a practical tool for spherical astronomy, allowing observers to plot positions of objects in the sky when their distances are unknown or unimportant.
A cosmic Mos Eisley. Knowhere. Wellinton Alves. 2007.
The edge of the universe
Points of Interest
Other than the main hall and the marketplace, a major point of interest is the Continuum Cortex. It is built into the brain stem of the Celestial, and it can lead to anywhere in the universe as well as to any time. It is from the Continuum Cortex that those in Knowhere travel.
Knowhere is located inside the decapitated head of an unidentified Celestial. One important quality of Knowhere, and and of all Celestials, is that it is linked to all others of its race through Quantum Telepathy which means all Celestials are connected no matter where or when they exist.
Nova #8 (2008)
More on Marvel.com: http://marvel.com/universe/Knowhere#ixzz3AZmzCgbs