Wednesday, December 28, 2011

That Giant ball of fiery plasma that makes life possible:

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 1,392,000 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, while the rest is mostly helium. The rest of it (1.69%, 5,628 times the mass of Earth) consists of heavier elements, including oxygen,carbon, neon, iron, and others.

Mean diameter 1.392×106 km
109 × Earth
Equatorial radius 6.955×105 km
109 × Earth
Equatorial circumference 4.379×106 km
109 × Earth
Flattening 9×10−6
Surface area 6.0877×1012 km2
11,990 × Earth
Volume 1.412×1018 km3
1,300,000 × Earth
Mass 1.9891×1030 kg
333,000 × Earth
Average density 1.408×103 kg/m3
Density Center (model): 1.622×105 kg/m3
Lower photosphere: 2×10−4 kg/m3
Lower chromosphere: 5×10−6 kg/m3
Corona (avg.): 1×10−12 kg/m3
Equatorial surface gravity 274.0 m/s2
27.94 g
28 × Earth
Escape velocity
(from the surface)
617.7 km/s
55 × Earth
Temperature Center (modeled): ~1.57×107 K
Photosphere (effective): 5,778 K
Corona: ~5×106 K
Luminosity (Lsol) 3.846×1026 W
~3.75×1028 lm
~98 lm/W efficacy
Mean Intensity (Isol) 2.009×107 W·m−2·sr−1


  1. The sun is really our best friend in space :D
    The only thing that is never cold-hearted...
    --> Sun <3 <---

  2. The sun is the lifeline to the Earth, hopefully it won't burn out too soon!

  3. Very interesting info , recruiters always ask you about this!