Y0 (other)
Y0 may refer to: * year 0, first year * Y0 class, a star class with brown dwarfs * Yakuza 0 See also * 0Y (other) *YO (other) ''Yo'' is a slang interjection, commonly associated with North American English. It was popularized by the Italian-American community in Philadelphia, Pennsylvania, in the 1940s. Although often used as a greeting and often deployed at the ...

Year 0
A year zero does not exist in the Anno Domini (AD) calendar year system commonly used to number years in the Gregorian calendar (nor in its predecessor, the Julian calendar); in this system, the year is followed directly by year . However, there is a year zero in both the astronomical year numbering system (where it coincides with the Julian year ), and the ISO 8601:2004 system, the interchange standard for all calendar numbering systems (where year zero coincides with the Gregorian year ; see conversion table). There is also a year zero in most Buddhist and Hindu calendars. Historical, astronomical and ISO year numbering systems Historians The ''Anno Domini'' era was introduced in 525 by Scythian monk Dionysius Exiguus (c. 470 – c. 544), who used it to identify the years on his Easter table. He introduced the new era to avoid using the ''Diocletian era'', based on the accession of Roman Emperor Diocletian, as he did not wish to continue the memory of a persecutor o ...
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Brown Dwarf
Brown dwarfs (also called failed stars) are substellar objects that are not massive enough to sustain nuclear fusion of ordinary hydrogen ( 1H) into helium in their cores, unlike a main-sequence star. Instead, they have a mass between the most massive gas giant planets and the least massive stars, approximately 13 to 80 times that of Jupiter (). However, they can fuse deuterium ( 2H), and the most massive ones (> ) can fuse lithium ( 7Li). Astronomers classify self-luminous objects by spectral class, a distinction intimately tied to the surface temperature, and brown dwarfs occupy types M, L, T, and Y. As brown dwarfs do not undergo stable hydrogen fusion, they cool down over time, progressively passing through later spectral types as they age. Despite their name, to the naked eye, brown dwarfs would appear in different colors depending on their temperature. The warmest ones are possibly orange or red, while cooler brown dwarfs would likely appear magenta or black to th ...
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Yakuza 0
''Yakuza 0'' is an action-adventure game developed by Ryu Ga Gotoku Studio and published by Sega. It is the sixth main entry in the '' Yakuza series'' and a prequel to the original game. It was released for PlayStation 3 and PlayStation 4 in Japan in March 2015, and in North America and Europe for PlayStation 4 in January 2017. It was released on Windows on 1 August 2018 and on Xbox One on 26 February 2020. A free accompanying game application for PlayStation Vita, titled ''Yakuza 0: Free to Play Application for PlayStation Vita'', was released in Japan in February 2015. Set in late 1988 during Japan's bubble era, and seventeen years before the events of the first game, the story follows Kazuma Kiryu and Goro Majima as they get embroiled in a conflict between various Yakuza factions for control of a patch of land known as the "Empty Lot". The game received generally favourable reviews from critics, and is largely responsible for the franchise's rise in popularity and sales i ...
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0Y (other)
0Y (zero Y) or 0-Y may refer to: *0 (year) *0y, the notation for zero yellow in CMYK The CMYK color model (also known as process color, or four color) is a subtractive color model, based on the CMY color model, used in color printing, and is also used to describe the printing process itself. The abbreviation ''CMYK'' refers ... See also * OY (other) * Y0 (other) * Year Zero (other) {{Letter-NumberCombDisambig ...
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