Which of the following is evidence for the existence of "dark matter" in the universe?

Question

Quizplus · Accepted Answer

The rotation curves of galaxies, which show the velocity of stars orbiting the galaxy's center, do not decrease as expected with distance from the center. Instead, stars at the outer edges of galaxies move faster than can be accounted for by the visible matter alone, suggesting the presence of additional, unseen mass, known as dark matter.

Which of the Following Is Evidence for the Existence of "Dark