When a large galaxy collides with a small galaxy, the smaller galaxy may be pulled apart by tidal forces.

Question

Quizplus · Accepted Answer

Tidal forces occur when the gravity of a larger object, such as a galaxy, is strong enough to distort and pull apart a smaller object, such as a dwarf galaxy, that comes too close. As a result, the smaller galaxy may be torn apart and its stars and gas can be assimilated into the larger galaxy.

When a Large Galaxy Collides with a Small Galaxy, the Smaller