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