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Other cultures contributed to thought about the fixed stars including the Babylonians, who from the eighteenth to the sixth century BC constructed constellation maps. Maps of the stars and the idea of mythological stories to explain them were largely being acquired all over the world and in several cultures.
The position marks are entered inward from the distance marks according to their declinations, connected by lines (doted when positive) representing the arcs of the declinations viewed edge-on. This list covers all known stars, white dwarfs, brown dwarfs, and sub-brown dwarfs within 20 light-years (6.13 parsecs) of the Sun. So far, 131 such ...
Under really dark sky conditions, however, M33 is easy to see, even in direct vision. Many other Messier objects are also visible under such conditions. [4] The most distant objects that have been seen by the naked eye are nearby bright galaxies such as Centaurus A, [7] Bode's Galaxy, [8] [9] [10] Sculptor Galaxy, [10] and Messier 83. [11]
It differs from the “light travel distance” since the proper distance takes into account the expansion of the universe, i.e. the space expands as the light travels through it, resulting in numerical values which locate the most distant galaxies beyond the Hubble sphere and therefore with recession velocities greater than the speed of light c.
The most distant known star prior to the discovery of Earendel. Warhol 0.94 [8] 3,000 2014 Transient, extremely luminous O-type star or a Large Wolf-Rayet star [9] AT 2022zmn: 0.019 [10] 84 2022 Luminous blue variable. AT 2022oku: 0.018 [11] 79 2022 Luminous blue variable. AT 2018kle: 0.012505 [12] 55 2018 Luminous blue variable. SDSS J1229 ...
A typical example of long-distance observation. The Tatra Mountains as seen from the Łysa Góra, in southeast Poland, at a distance of about 200 km (120 mi).. Long-distance observation is any visual observation, for sightseeing or photography, that targets all the objects, visible from the extremal distance with the possibility to see them closely.
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Procyon (/ ˈ p r oʊ s i. ɒ n /) [17] is the brightest star in the constellation of Canis Minor and usually the eighth-brightest star in the night sky, with an apparent visual magnitude of 0.34. [3]