What is sun?

  • (noun): First day of the week; observed as a day of rest and worship by most Christians.
    Synonyms: Sunday, Lord's Day, Dominicus
    See also — Additional definitions below


The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. It has a diameter of about 1,392,684 km, about 109 times that of Earth, and its mass (about 2×1030 kilograms, 330,000 times that of Earth) accounts for about 99.86% of the total mass of the Solar System. Chemically, about three quarters of the Sun's mass consists of hydrogen, while the rest is mostly helium. The remainder (1.69%, which nonetheless equals 5,628 times the mass of Earth) consists of heavier elements, including oxygen, carbon, neon and iron, among others.

Read more about Sun.

Some articles on sun:

Ze Rong - Biography - Service Under Liu Yao
... When Liu Yao was engaged in conflict with the rising Sun Ce, Ze Rong served as one of the former's allies, camping near Moling with Xue Li ... They were routed by Sun Ce and forced to retreat, though Ze Rong managed to avoid complete annihilation due to Fan Neng and Yu Mi's hinder on Sun Ce's forces ... During one battle, Sun Ce suffered an arrow wound and returned to his base at Niuzhu ...
Yellow Sun
... Yellow Sun was the first British operational high-yield strategic nuclear weapon ... the outer casing the warhead (or physics package) was known as "Green Grass" (in Yellow Sun Mk.1) and "Red Snow" (in Yellow Sun Mk.2) ...
Geocentric Model - Geocentrism and Rival Systems
... Ponticus was once thought to have proposed that both Venus and Mercury went around the Sun rather than the Earth, but this is no longer accepted ... put Mercury and Venus in orbit around the Sun ... He wrote a work, which has not survived, on heliocentrism, saying that the Sun was at the center of the universe, while the Earth and other planets ...
Sun - Observation and Effects
... The brightness of the sun can cause pain from looking at it with the naked eye, although doing so for brief periods is not hazardous for normal, non-dilated eyes ... Looking directly at the Sun causes phosphene visual artifacts and temporary partial blindness ... this depends on general exposure to solar UV, not on whether one looks directly at the Sun ...
Efnysien - Character Analysis
... not into it, and therefore the sacrifice actually was a dedication of Gwern to a Sun cult, as Celts worshipped Sun by leaping over fires and driving cattle between bonfires ... an onslaught was that Irish did not approve when their prince was kidnapped for the Sun cult ... Thus Virpiranta sees Efnisien as a Sun god and therefore the Welsh equivalent to Esus ...

More definitions of "sun":

  • (noun): The rays of the sun.
    Example: "The shingles were weathered by the sun and wind"
    Synonyms: sunlight, sunshine
  • (verb): Expose one's body to the sun.
    Synonyms: sunbathe
  • (noun): Any star around which a planetary system evolves.
  • (noun): A typical star that is the source of light and heat for the planets in the solar system.
    Example: "The sun contains 99.85% of the mass in the solar system"
  • (noun): A person considered as a source of warmth or energy or glory etc.

Famous quotes containing the word sun:

    Visions of half the world burned black
    And the sun shrunken yellow in smoke.
    Robert Frost (1874–1963)

    Our purses shall be proud, our garments poor,
    For ‘tis the mind that makes the body rich,
    And as the sun breaks through the darkest clouds,
    So honor peereth in the meanest habit.
    William Shakespeare (1564–1616)