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The Mapparium was designed to allow the countries of the world to be viewed in accurate geographical relationship to each other, hence the design of the Mapparium—a mirror-image, concave reversal of the Earth, viewed from within. This is the only configuration that places the eye at the same distance from every point on the globe.
Depending on configuration, the projection also may map the sphere to a single diamond or a pair of squares. 1997 HEALPix: Pseudocylindrical Equal-area Krzysztof M. Górski: Hybrid of Collignon + Lambert cylindrical equal-area. 1929 Boggs eumorphic: Pseudocylindrical Equal-area Samuel Whittemore Boggs
Globe at Night is an international scientific research program that crowdsources measurements of light pollution in the night sky. At set time periods within each year, the project asks people to count the number of stars that they can see from their location and report it to the project's website.
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.
A medieval depiction of the Ecumene (1482, Johannes Schnitzer, engraver), constructed after the coordinates in Ptolemy's Geography and using his second map projection. In cartography, a map projection is any of a broad set of transformations employed to represent the curved two-dimensional surface of a globe on a plane.
Behaim-Globe, Germanisches Nationalmuseum, Nuremberg, height 133 cm (52 in) Behaim’s Erdapfel Modern recreation of the gores of the Erdapfel Oceanic area described on the Martin Behaim globe. The Erdapfel ( German for 'earth apple'; pronounced [ˈeːɐ̯tˌʔapfl̩] ⓘ ) is a terrestrial globe 51 cm (20 in) in diameter, produced by Martin ...
The 37th parallel north is roughly the northern limit of the visibility of Canopus, the second-brightest star of the night sky. Along with the 37th parallel south , it is the latitude at which solar irradiance is closest to the planetary average, [ 2 ] with higher solar irradiance equatorward and lower poleward.
Analemma with date marks, printed on a globe, Globe Museum, Vienna, Austria. In astronomy, an analemma (/ ˌ æ n ə ˈ l ɛ m ə /; from Ancient Greek ἀνάλημμα (analēmma) 'support') [a] is a diagram showing the position of the Sun in the sky as seen from a fixed location on Earth at the same mean solar time over the course of a year.