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How do you know the suns mass?

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Anonymous

15y ago
Updated: 8/17/2019

By its gravitational effects. The law of gravitation states that F = G (m1) (m2) / r2; the constant "G" can be measured in Earth laboratories with a delicate instrument that measures the force between two objects; from there, the mass of Earth can be calculated, and from the mass of Earth, other objects in the Solar System (once the distances are also known).

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Wiki User

15y ago

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