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IAU designated constellations. In contemporary astronomy, 88 constellations are recognized by the International Astronomical Union (IAU). [1] Each constellation is a region of the sky bordered by arcs of right ascension and declination, together covering the entire celestial sphere. Their boundaries were officially adopted by the International ...
IAU designated constellations by area. Hydra is the largest constellation, covering more than 1⁄32 of the night sky. The International Astronomical Union (IAU) designates 88 constellations of stars. In the table below, they are ranked by the solid angle that they subtend in the sky, measured in square degrees and millisteradians .
Celestial cartography, [1] uranography, [2] [3] astrography or star cartography[citation needed] is the aspect of astronomy and branch of cartography concerned with mapping stars, galaxies, and other astronomical objects on the celestial sphere. Measuring the position and light of charted objects requires a variety of instruments and techniques.
These are azimuthal orthographic projections of the Earth from four sides plus the poles. 726x726 pixels, aliased. XCFs have separate layers for water, land, coastlines, political borders, political borders over water (not shown in PNGs), and latitude & longitude gridlines (not shown in PNGs). Image:Blankmap-ao-000 -africa europe.png XCF.
This is a list of flags, arranged by design, serving as a navigational aid for identifying a given flag.Uncharged flags are flags that either are solid or contain only rectangles, squares and crosses but no crescents, circles, stars, triangles, maps, flags, coats of arms or other objects or symbols.
Astronomers Without Borders ( AWB) is a U.S.-based organization founded by Mike Simmons, dedicated to spreading astronomy throughout the world and connecting people through this universal interest. Projects include crowdfunding in developed countries to sponsor the purchase of equipment and training for people in developing countries.
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A white ensign with four red stars representing the Southern Cross 1939–present Ensign of the Royal New Zealand Air Force: A light blue field with the roundel of the Royal Air Force defaced with the letters, "NZ". 16 November 1938 – present New Zealand Civil Air Ensign: A blue cross with a wide border on a light blue field.
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