Which of the following best describes the primary method for determining the mass distribution of a galaxy, especially in its outer regions?
Question 2
If a galaxy's rotation curve shows that stars at increasing distances from the galactic center maintain a nearly constant orbital velocity, what does this imply about the distribution of mass?
Question 3
What is the primary reason that dark matter is considered 'dark'?
Question 4
Which of the following statements accurately describes the distribution of dark matter in galaxies?
Question 5
Consider a star orbiting a galaxy at a distance $r$ from the galactic center. If its orbital velocity is $v$, which formula is used to relate the enclosed mass $M(r)$ to these quantities?
