What makes up the interstellar medium?
A)open clusters
B)O and B stars
C)K and M stars
D)gas and dust
E)all of the above

Question

Quizplus · Accepted Answer

The interstellar medium is made up of gas and dust, which exist in various forms such as atomic hydrogen, molecular clouds, ionized gas, and interstellar dust grains. Open clusters, O and B stars, and K and M stars are not typically considered part of the interstellar medium, as they are objects that exist within it, rather than being components of it.

What Makes Up the Interstellar Medium