Which factor is essential to the initial formation of galaxies, for either of the theories describing galaxy evolution?(1 point)

Question

Responses

The force of orbiting stars generates collisions.
The force of orbiting stars generates collisions.

Massive gas and dust clouds collapse.
Massive gas and dust clouds collapse.

Gravity acts on existing material, shaping it into a new form.
Gravity acts on existing material, shaping it into a new form.

Small lumps of material merge into larger clumps.
Small lumps of material merge into larger clumps.

Answer 1

The essential factor to the initial formation of galaxies, for either of the theories describing galaxy evolution, is:

Massive gas and dust clouds collapse.

This process is key in both the hierarchical model of galaxy formation and other theories, as it leads to the creation of the first stars and structures that eventually evolve into galaxies.