The Sun

The sun is a medium star at the middle of our solar system. It is not  only the biggest star in the universe. It is a nearly spherical ball of hot plasma. The sun has a mass of 330,000 that of Earth. The sun is mostly made of hydrogen and helium. The sun is a G-type Main-sequence star (G2V) based on spectral class. The enormous effect the Sun on the Earth had been recognized since prehistoric times. The sun may have dark spots, or sunspots. These were caused by the sun's gigantic electromagnetic field. The sun is dangerous because it has ultraviolet rays. These rays may damage your skin so put sun screen always and also respect the sun.                                   


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