Interstellar gas clouds may collapse to form stars if they
A)have very high temperatures.
B)encounter a shock wave.
C)rotate rapidly.
D)are located near main sequence spectral type K and M stars.
E)All of the other choices are correct.

Question

Quizplus · Accepted Answer

Interstellar gas clouds require a trigger to initiate collapse and eventual star formation. One such trigger is the encounter with shock waves, which can cause the cloud to compress and collapse through gravitational attraction.

Interstellar Gas Clouds May Collapse to Form Stars If They