How do we know the total mass of the Milky Way Galaxy that is contained within the Sun’s orbital path? – Q/A (Question and Answer)

Question
How do we know the total mass of the Milky Way Galaxy that is contained within the Sun’s orbital path? – Q/A (Question and Answer)

Test Answer

Answer:

by applying Newton’s version of Kepler’s third law (or the equivalent orbital velocity law) to the Sun’s orbit around the center of the Galaxy

Recource AST 1002 exam 3

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