Sun
CategoryStar
SystemSolar System
Diameter1.39 million km
About Sun
A G-type main-sequence star containing 99.86 percent of the solar systems mass. Surface temperature is 5,500C, core temperature is 15 million C. About 4.6 billion years old, halfway through its life. Will expand into a red giant in about 5 billion years. Converts 600 million tons of hydrogen to helium every second. Light takes 8 minutes 20 seconds to reach Earth.
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