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Science - The Sun REPORT ON THE SUN The Greeks called it Helios and the Romans called it Sol We call it the Sun The sun is not only the center of our solar system but the only star in our solar system Proportion is very important to understand this report the sun can be called big but that would be a huge under statement for you can call an airplane big Well this star is humongously gigantic if there is such a word because it has 332820 times the mass of earth and covers 998 of the mass in our solar system By number of atoms 921 of it is made of Hydrogen and 78 is helium the rest are just metals which only would amount to 01 This of course changes slowly over time as the sun converts hydrogen to helium in its core Differential Rotation which the sun exhibits means it has different surface rotation times in different places For example the sun at its equator rotates once every 254 earth days but near the poles it rotates every 36-earth days Differential rotation can also be observed in gas planets and it occurs naturally because the sun is not a solid body like earth Conditions at the suns core is extreme 156 million Kelvin compared to 5800 Kelvin on the surface and the pressure is 250 billion 1 atmosphere is equal to 145 lbs per square inch The cores gases are compressed to density 150 times water Almost everything about the sun is extreme 386 billion billion megawatts per second is produced by nuclear fusion Each second about 700000000 tons of hydrogen is converted into helium and 5000000 is converted into gamma rays The surface of the sun is called photosphere and just above it is the chromosohere The photosphere has cool regions called sunspots where the temperature is about 3800 Kelvin compared
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