Which of these events can happen when galaxies collide?(1 point) Responses Galaxies merge. Galaxies merge. Galaxies destroy their stars. Galaxies destroy their stars. Galaxies triple in size. Galaxies triple in size. Galaxies disappear.

Galaxies merge.

Which galaxy will collide with the Milky Way in several billion years?(1 point) Responses Sagittarius Dwarf Galaxy Sagittarius Dwarf Galaxy Andromeda Galaxy Andromeda Galaxy Local Group Local Group Large Magellanic Cloud Large Magellanic Cloud

Andromeda Galaxy.

When galaxies collide, the following events can occur:

1. Galaxies merge: When two or more galaxies collide, their gravitational forces can cause them to merge into a single, larger galaxy. This merging process can take millions of years.

2. Galaxies destroy their stars: During a collision, the gravitational forces between galaxies can disrupt the structures of stars within them. Some stars may be torn apart or ejected from their original orbits due to the intense gravitational interactions.

3. Galaxies triple in size: Colliding galaxies can experience a burst of star formation due to the compression of gas and dust. This can lead to an increase in the size of the resulting merged galaxy, as new stars are formed.

4. Galaxies disappear: In certain cases, when galaxies collide, it is possible for one or both of the galaxies to be completely disrupted. The gravitational forces and tidal effects can tear apart the structures of the galaxies, causing them to eventually disperse and become scattered.

Note: It seems that option 7 listed "Galaxies merge" twice. I have considered it only once for the sake of providing accurate information.

When galaxies collide, several different events can happen.

1. Galaxies merge: This is the most common outcome when galaxies collide. Due to the mutual gravitational attraction, the two galaxies can merge together over millions of years, forming a new elliptical or spiral galaxy.

2. Galaxies destroy their stars: When galaxies collide, the gravitational interaction between stars can disrupt their orbits. Some stars may be flung out of the galaxies, while others can collide with each other or fall into the central regions of the merged galaxy. This can lead to the destruction of stars in the process.

3. Galaxies triple in size: In some cases, when galaxies collide, the interaction can cause the galaxies to grow in size. The gravitational forces between them can cause the outer regions of the galaxies to expand, resulting in a larger combined galaxy.

4. Galaxies disappear: While it is relatively rare, in some instances, galaxies can be completely disrupted and "disappear" after a collision. This can happen if the interaction is extremely violent and leads to the dispersion of the galactic material, scattering it across space.

To determine which event can happen when galaxies collide, you would need to consider the specific characteristics of the galaxies involved, such as their mass, size, and relative velocities. Additionally, computer simulations and observations of past galactic collisions can provide insight into the likely outcomes.