Under what conditions might interstellar gas clouds collapse to form stars?
A)if they encounter a shock wave
B)if they have very high temperatures
C)if they rotate rapidly
D)if they are located near main-sequence spectral type K and M stars

Question

Quizplus · Accepted Answer

The collapse of interstellar gas clouds to form stars happens when the gas cloud encounters a shock wave, which creates a disturbance that triggers the process of gravitational collapse. The shock wave can come from a variety of sources, such as supernova explosions or the collision of two gas clouds. High temperatures, rapid rotation, or the proximity to K and M stars are not necessarily indicative of conditions that lead to star formation.

Under What Conditions Might Interstellar Gas Clouds Collapse to Form