In fact, among the star forming regions within the Local Group of galaxies, NGC 604 is second in size only to 30 Doradus, also known as the Tarantula Nebula in the Large Magellanic Cloud.

• 其实，在本星系群中的恒星形成区里，NGC 604是大小排名第二的恒星育婴室，仅次于大麦哲伦云中的剑鱼座30（又被称为毒蜘蛛星云）。