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The Sun is the star at the center of the Solar System.It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
Solar cycles are nearly periodic 11-year changes in the Sun's activity that are based on the number of sunspots present on the Sun's surface. The first solar cycle conventionally is said to have started in 1755. The source data are the revised International Sunspot Numbers (ISN v2.0), as available at SILSO. [1]
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In the late 20th century, the Black Sun symbol became widely used by neo-fascist, neo-Nazi, [8] the far-right and white nationalists. The symbol often appears on extremist flags, t-shirts, posters, websites and in extremist publications associated with such groups. Modern far-right groups often refer to the symbol as the sun wheel or Sonnenrad.
In the Bible, Malachi 4:2 mentions the "Sun of Righteousness" (sometimes translated as the "Sun of Justice"), [15] [16] which some Christians have interpreted as a reference to the Messiah . [17] In ancient Roman culture, Sunday was the day of the sun god. In paganism, the Sun was a source of life, giving warmth and illumination.
Sun printing may also refer to a photographic process using potassium dichromate which produces a negative plate for conventional lithographic printing. The process uses a film of gelatine spread on a flat and rigid surface. This is coated with a dilute solution of potassium dichromate and dried in low light conditions.
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U+263C ☼ WHITE SUN WITH RAYS (A more accurate term might be "outlined". The actual colour is an implementation choice.) U+1F728 ALCHEMICAL SYMBOL FOR VERDIGRIS; U+1F323 WHITE SUN (A more accurate term might be "outlined". The actual colour is an implementation choice.) U+1F31E SUN WITH FACE; U+1F506 HIGH BRIGHTNESS SYMBOL