Which component of the galaxies interacts much more frequently, often triggering massive star formation?

Answer

Interstellar gas and dust clouds

Unlike the sparse stars, the interstellar gas and dust interact much more frequently. Collisions and compression of these clouds often trigger massive bursts of new star formation, known as a 'starburst' phase.

Which component of the galaxies interacts much more frequently, often triggering massive star formation?

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