The event that happens when galaxies collide is that D. Galaxies merge.
- It should be noted that galaxies refer to the cosmic islands of dust, star, gas, and dark matter that are held by gravity. Our Galaxy is known as the Milky Way.
- It should be noted that when galaxies collide, they merge together. For example, when there is a collision of galaxies, new stars will be formed when the gases combine.
- In this case, the galaxies both lose their shapes and a new galaxy emerges.
In conclusion, the correct option is that galaxies emerge.
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