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| How long are you planning to stay here? http://yuvututube.fun yuvutu tube mobile Scientists have been trying to unravel the mechanisms that drive the sun for decades but one fundamental mystery endures: How it manages to release energy from its relatively cool, 10,000 degree Fahrenheit (5,500 degree Celsius) surface into an atmosphere that can reach up to 5 million degrees Fahrenheit (2.8 million Celsius). |
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Calvin |
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2019-05-22 05:50:37 |
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