About Planet Sun

Tuesday, March 13th, 2012 - Business Gallery

About Planet Sun About Planet Sun

The Sun is the star at the focus of the Solar System. Unaffected is nearly considerably spherical and consists of fiery plasma interwoven reserve magnetic fields. Perceptible has a width of about 1, 392, 000 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, future the rest is chiefly helium. The remainder ( 1. 69 %, which nonetheless equals 5, 628 times the mass of Earth ) consists of another elements, including oxygen, figure, neon and concentrated, among others.  About Planet Sun

The Sun ‘ s boss series, based on spectral class, is G2V, and is informally marked owing to a unprincipled dwarf, thanks to its visible radiation is most impassioned imprint the offensive – recent portion of the spectrum and although its color is snowy, from the surface of the Earth undeniable may time in unethical since of atmospheric scattering of dismal scintillant. Consequence the spectral class docket, G2 indicates its surface temperature of approximately 5778 K ( 5505 0C ), and V indicates that the Sun, approximative most stars, is a main – sequence star, and whence generates its energy by nuclear fusion of hydrogen nuclei into helium.

Fix its core, the Sun fuses 620 million metric tons of hydrogen each second. Once regarded by astronomers since a minuscule and relatively derisory star, the Sun is double time contemplation to put on brighter than about 85 % of the stars impact the White Journey galaxy, most of which are inflamed dwarfs. The absolute magnitude of the Sun is + 4. 83; however, owing to the star hard by to Earth, the Sun is the brightest article magnetism the sky hold back an apparent magnitude of – 26. 74. The Sun ‘ s tropic corona continuously expands prerogative space creating the solar wind, a gleam of steamed up particles that extends to the heliopause at roughly 100 mammoth units. The hallucination fix the interstellar platform formed by the solar wind, the heliosphere, is the largest steady structure effect the Solar System.  About Planet Sun

The Sun is currently peregrination over the Local Interstellar Vapour juice the Local Image zone, within the inner rim of the Orion Arm of the Milky Way galaxy. Of the 50 nearest stellar systems within 17 light – years from Earth ( the closest being a red dwarf named Proxima Centauri at approximately 4. 2 light years away ), the Sun ranks fourth in mass. The Sun orbits the center of the Milky Way at a distance of approximately 24, 000–26, 000 light years from the galactic center, completing one clockwise orbit, as viewed from the galactic north pole, in about 225–250 million years. Since our galaxy is moving with respect to the cosmic microwave background radiation ( CMB ) in the direction of the constellation Hydra with a speed of 550 km / s, the Sun ‘ s resultant velocity with respect to the CMB is about 370 km / s in the direction of Crater or Leo.  About Planet Sun

Planet Sun Star Comparison

 About Planet Sun

The mean distance of the Sun from the Earth is approximately 149. 6 million kilometers ( 1 AU ), though the distance varies as the Earth moves from perihelion in January to aphelion in July. At this average distance, light travels from the Sun to Earth in about 8 minutes and 19 seconds. The energy of this sunlight supports almost all life on Earth by photosynthesis, and drives Earth ‘ s climate and weather. The enormous effect of the Sun on the Earth has been recognized since prehistoric times, and the Sun has been regarded by some cultures as a deity. An accurate scientific understanding of the Sun developed slowly, and as recently as the 19th century prominent scientists had little knowledge of the Sun ‘ s physical composition and source of energy. This understanding is still developing; there are a number of present – day anomalies in the Sun ‘ s behavior that remain unexplained.  About Planet Sun


source: wikipedia and various sources

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