An irregular galaxy is defined as one that does not have a specific shape, distinguishing it from spiral and elliptical galaxies. The correct choice for this question is option B: 'does not have a specific shape.' These galaxies are characterized by their chaotic appearance and are formed often due to gravitational interactions.
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An irregular galaxy is one that does not have a specific shape, distinguishing it from other galaxy types. These galaxies can have chaotic forms due to gravitational interactions and typically do not conform to the structured forms of spiral or elliptical galaxies. They are notable for their unique appearances rather than their sizes. ;