X-rays come from certain regions of the interstellar medium because
A) those regions are heated to a very high temperature.
B) gas molecules in those regions are at a very high density.
C) dust and gas in those regions are moving very rapidly.
D) nuclear fusion is occurring in those regions.

Question

Quizplus · Accepted Answer

X-rays are emitted from regions of the interstellar medium that are heated to very high temperatures, often due to shock waves or other energetic processes, which cause the gas to emit X-rays.

X-Rays Come from Certain Regions of the Interstellar Medium Because