Why are there different types of galaxies?

Answer 1

The collision between the galaxies is basically the reason of their different shape.

Smaller galaxies gravitationally attract one another and merge into an elliptical shape; this merging process can go on for billions of years, so the galaxy appears irregular in shape in between a merging process. Galaxies that have been undisturbed for billions of years are likely to form spiral, disk-shaped galaxies.

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Answer 2

Asher Cohen

Galaxies can be classified into three types: elliptical, spiral, and irregular galaxies. These types of galaxies differ from one another in terms of their formation, size, shape, and composition. These differences are caused by a variety of factors, including gravitational interactions, star formation rates, and the distribution of dark matter.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.