Which of these components makes up the largest amount of mass in a typical large cluster of galaxies?
A) supermassive black holes
B) stars
C) cold gas
D) hot gas
E) neutron and white dwarf stars

Question

Quizplus · Accepted Answer

The largest amount of mass in a typical large cluster of galaxies is made up of hot gas. This gas can be detected through its X-ray emission and is believed to make up around 80-90% of the total mass in a cluster. The other options (A, B, C, and E) make up a smaller fraction of the total mass.

Which of These Components Makes Up the Largest Amount of Mass