What is the estimated core temperature for our Sun, used as a baseline comparison for stellar interiors?
Answer
15 million Kelvin
The core temperature of our Sun is estimated to be approximately 15 million Kelvin (or $1.5 imes 10^7$ K). This internal heat is the product of thermonuclear fusion occurring under immense gravitational pressure at the star's center, which generates the necessary outward pressure to maintain hydrostatic equilibrium. This value is used as a fundamental benchmark against which the far more extreme core temperatures found in massive stars, which can reach 30 to 40 million Kelvin, are contrasted.
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