What is the calculated mass of the Sun in kilograms, according to astronomical measurements?
Answer
$1.989 imes 10^{30}$ kilograms
The mass of the Sun is a fundamental physical parameter used in astrophysics, calculated to be approximately $1.989 imes 10^{30}$ kilograms. This staggering amount of mass is what generates the immense gravitational force necessary to hold the vast sphere of plasma together and, critically, to create the extreme pressure and density required in the core to initiate and sustain hydrogen fusion. This value serves as a crucial baseline for calculating the masses of other stars and understanding orbital dynamics within the solar system. The high magnitude of this number underscores why the Sun possesses the requisite conditions for stellar activity.
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