What phenomenon is triggered when gas clouds in merging galaxies are compressed?
Answer
Star formation, sometimes leading to a 'starburst' galaxy phase
The compression of immense gas clouds during a galaxy merger rapidly triggers star formation, making suddenly available fuel for stellar nurseries, which results in a massive, bright burst of new stars.

#Videos
What If The Largest Objects In The Universe Collided? - YouTube
Related Questions
What primarily determines the consequence of a cosmic collision?What is a possible result when two stars approach closely enough to interact?What is generally true about the distances between stars within a galaxy?When two spiral galaxies merge, what component interacts directly and causes significant visible effects?What phenomenon is triggered when gas clouds in merging galaxies are compressed?According to Einstein’s General Relativity, what do colliding black holes generate?What process leads up to the final, instantaneous merger of two black holes?What is the primary observable evidence of galaxy mergers captured by tools like the Hubble Space Telescope?How does the final, energetic stage of a binary black hole inspiral compare in duration to a full galaxy merger?What evidence confirms Einstein’s predictions about spacetime under extreme conditions?