Which of the following best describes an irregular galaxy?

A group of stars that serve as a quick reference to different parts of the sky
Several billion stars arranged in a shape that has uneven edges
Billions of planets arranged in an irregular pattern with a flattened core
Millions of stars arranged in the shape of a disk with spiraling arms

1 answer

The best description of an irregular galaxy from the options provided is:

Several billion stars arranged in a shape that has uneven edges.

Irregular galaxies do not have a defined shape, unlike spiral or elliptical galaxies, and often appear chaotic and fragmented.