What is the result when gas clouds from both of the colliding galaxies meet?
A: The clouds, being very diffuse, pass through each other just like stars pass by each other without interacting.
B: The clouds crushing down on each other starts a burst of new star formation.
C: They smash each other into bits and end up spread out in many directions.
D: Huge, galaxy-spanning lightning bolts strike out from their collision, destroying many nearby stars.
E: They collect into one big cloud but nothing else happens.
Ans: B: The clouds crushing down on each other starts a burst of new star formation.
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