Unformatted text preview: is 150 million kilometers from Earth. Once you know the distance from Earth to the sun it is easy to find the sun’s mass. Newton’s third law explains how there is a gravitational force between two objects. The distance between the two objects explains the mass that is necessary for one object to keep the second object at a constant orbital speed. The sun’s mass is about 333,000 times the mass of Earth. By using Kepler’s and Newton’s discoveries we can find the mass of just about anything....
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 Spring '08
 Orozs
 Astronomy, Solar System, Mass, General Relativity, Isaac Newton, Astronomical unit, Celestial mechanics

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