#1- What is sun write here about of sun? The sun is the star at the center of the solar system , It is nearly perfect sphere of hot plasma . with internal convective motion hat generates a magnetic field via a dynamo process, It is by for the most important source of the energy for life on earth, It diameter is about 1.39 million kilometers (864000 miles) or 109 times that of earth, It mass about 330,000 times that of earth ,It accounts for about 99.80% of the total mass of the solar system, Roughly three quantities of the sun mass consists of hydrogen (~ 73%) the rest is mostly helium (~25%), with much smaller quantities of heavier elements including oxygen carbon neon and iron, The sun is G-TYPE main sequence star (g2v) based on its spectral class, As such it is informally and not completely accurate referred to as a yellow dwarf ( its light is closer to where than yellow ), It formed approximately 4.6 billion years ago from the gravitational collapse of m
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