Multiple Choice
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 using the law of conservation of angular momentum to calculate the orbital speeds of nearby stars
D) by estimating the amount of gas and dust in between the stars
Correct Answer:
Verified
Correct Answer:
Verified
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