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[[File:lighterstill.jpg]][[File:The_sun_solar.jpg|right|frame]]

[[File:lighterstill.jpg]][[File:The_sun_solar.jpg|right|frame]]

'''The Sun''' is the [[star]] at the [[center]] of [[Earth]]'s [[Solar System]]. The Sun has a [[diameter]] of about 1,392,000 kilometers (865,000 mi) (about 109 Earths), and by itself accounts for about 99.86% of the Solar System's [[mass]]; the remainder consists of the planets (including Earth), [http://en.wikipedia.org/wiki/Asteroid asteroids], [http://en.wikipedia.org/wiki/Meteoroid meteoroids], [http://en.wikipedia.org/wiki/Comet comets], and dust in [[orbit]]. About three-quarters of the Sun's mass consists of [http://en.wikipedia.org/wiki/Hydrogen hydrogen], while most of the rest is [http://en.wikipedia.org/wiki/Helium helium]. Less than 2% consists of other elements, including [http://en.wikipedia.org/wiki/Iron iron], [http://en.wikipedia.org/wiki/Oxygen oxygen], [http://en.wikipedia.org/wiki/Carbon carbon], [http://en.wikipedia.org/wiki/Neon neon], and others.

'''The Sun''' is the [[star]] at the [[center]] of [[Earth]]'s [[Solar System]]. The Sun has a [[diameter]] of about 1,392,000 kilometers (865,000 mi) (about 109 Earths). Its mass (about 2 × 10 30th power kilograms, 330,000 times that of Earth) and by itself accounts for about 99.86% of the Solar System's [[mass]]; the remainder consists of the planets (including Earth), [http://en.wikipedia.org/wiki/Asteroid asteroids], [http://en.wikipedia.org/wiki/Meteoroid meteoroids], [http://en.wikipedia.org/wiki/Comet comets], and dust in [[orbit]]. About three-quarters of the Sun's mass consists of [http://en.wikipedia.org/wiki/Hydrogen hydrogen], while most of the rest is [http://en.wikipedia.org/wiki/Helium helium]. Less than 2% consists of other elements, including [http://en.wikipedia.org/wiki/Iron iron], [http://en.wikipedia.org/wiki/Oxygen oxygen], [http://en.wikipedia.org/wiki/Carbon carbon], [http://en.wikipedia.org/wiki/Neon neon], and others.

The Sun's [[color]] is white, although from the [[surface]] of the [[Earth]] it may appear yellow because of atmospheric [http://en.wikipedia.org/wiki/Scattering scattering]. Its [http://en.wikipedia.org/wiki/Stellar_classification stellar classification], based on spectral class, is G2V, and is informally designated a yellow star, because the majority of its radiation is in the yellow-green portion of the visible spectrum. In this spectral class label, G2 indicates its surface temperature of approximately 5,778 K (5,505 °C), and V (Roman five) indicates that the Sun, like most stars, is a [http://en.wikipedia.org/wiki/Main_sequence main sequence star], and thus generates its [[energy]] by [http://en.wikipedia.org/wiki/Nuclear_fusion nuclear fusion] of hydrogen nuclei into helium.  

The Sun's [[color]] is white, although from the [[surface]] of the [[Earth]] it may appear yellow because of atmospheric [http://en.wikipedia.org/wiki/Scattering scattering]. Its [http://en.wikipedia.org/wiki/Stellar_classification stellar classification], based on spectral class, is G2V, and is informally designated a yellow star, because the majority of its radiation is in the yellow-green portion of the visible spectrum. In this spectral class label, G2 indicates its surface temperature of approximately 5,778 K (5,505 °C), and V (Roman five) indicates that the Sun, like most stars, is a [http://en.wikipedia.org/wiki/Main_sequence main sequence star], and thus generates its [[energy]] by [http://en.wikipedia.org/wiki/Nuclear_fusion nuclear fusion] of hydrogen nuclei into helium.