| 释义 |
irregular galaxy
 irregular galaxyMessier 82irregular galaxyn. A galaxy that does not have the clearly defined shape and structure of an elliptical, lenticular, or spiral galaxy. Irregular galaxies typically contain large amounts of gas and dust, and their stellar populations are relatively young.irregular galaxy
irregular galaxy See galaxies; Hubble classification.irregular galaxy[i′reg·yə·lər ′gal·ik·sē] (astronomy) A galaxy which shows no definite order or shape, except that of a general flattened appearance. |