According to dark matter theory,most of the mass of a spiral galaxy is found
A)within the central supermassive black hole.
B)within the luminescent spiral arms.
C)outside of the luminescent spiral arms.
D)in the form of dark energy.

Question

Quizplus · Accepted Answer

According to dark matter theory, most of the mass in a spiral galaxy is found outside of the luminescent spiral arms, in the form of dark matter. Dark matter is theorized to outweigh visible matter roughly six to one, meaning that the visible matter in a galaxy, including stars, dust, and gas, makes up only a small fraction of the total mass. Therefore, option C is the best choice.

According to Dark Matter Theory,most of the Mass of a Spiral