Morphology of spiral galaxies from Galaxy Zoo & SDSS

Morphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the...星系形态学是认知星系的核心切入点。埃尔姆格伦等人基于……将旋涡星系（spiral galaxies）划分为絮状（flocculent）、多旋臂（multiple-arm）与宏象（grand-design）三类。