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Home Q & A Board Science-Related Homework Help Physics
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killian killian
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10 years ago
How do we know the total mass of the Milky Way Galaxy that is contained within the Sun's orbital path?
A) 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
B) By counting the number of stars visible in this region of the galaxy
C) By estimating the amount of gas and dust in between the stars
D) By using the law of conservation of angular momentum to calculate the orbital speeds of nearby stars
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padrepadre
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10 years ago
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killian Author
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10 years ago
Thank you.
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