Astronomia - Blogger
It has a diameter of about 1,392,684 km, about 109 times that of Earth, and its mass (about 2 × 10 30 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.