Which statement correctly describes the role of gravity in galaxy formation?

Question

Quizplus · Accepted Answer

Gravity plays a vital role in the formation of galaxies by making the dense regions denser. Gravity causes matter and dark matter to attract each other and form clumps, which then lead to the formation of larger structures such as galaxies. This process is known as hierarchical structure formation. Therefore, option C is the correct statement. Option A is incorrect because gravity does not affect the speed of photons. Option B is incorrect because while gravity causes galaxies to rotate, it is not the only factor responsible for it. Option D is also incorrect because gravity, in fact, causes the universe to be more clumpy and uneven than it would have been without its influence.

Which Statement Correctly Describes the Role of Gravity in Galaxy