One of the consequences of the collision of two galaxies appears to be

formation of new start

Explanation:the larger galaxy begins to change the smaller one and merge this small galaxy into the larger one. Galaxies are made up of stars, material, gas, rocks, and dust. When galaxies merge, the gasses interact with each other. Gasses in galaxies exist in large clouds that are spread throughout the galaxy system. This means that large clouds of gasses are more likely to run into other large clouds of gasses. The gasses begin to become dense and experience more pressure. The combination of gasses can cause waves, and the gasses can collapse on themselves: Both of these actions cause new stars to form.

The correct answer is "a burst of vigorous star birth".

Explanation:

Galaxy collisions are frequent, although due to the extremely faint distribution of matter in galaxies there is mostly a gravitational interaction. A collision can behave like a merger of galaxies, generating the birth of stars from the collisions that occur between them.

Have a nice day!