Which galaxy type is described as having a central bulge and winding arms?

Which galaxy type is described as having a central bulge and winding arms?

• A. Elliptical
• B. Spiral
• C. Irregular
• D. Lenticular

Answer: (B)

A galaxy described as having a central bulge and winding arms is a spiral galaxy. The central bulge is the dense group of stars at the core, while the winding arms form a flattened disk that spirals outward. Those arms are where gas and dust concentrate and new stars form, giving the arms their bright, patterned appearance. Elliptical galaxies lack a disk and spiral arms, appearing more like smooth ellipsoids. Irregular galaxies have no regular shape, and lenticular galaxies have a disk and bulge but no visible spiral arms. So the combination of a central bulge plus winding arms points to a spiral galaxy.

A galaxy described as having a central bulge and winding arms is a spiral galaxy. The central bulge is the dense group of stars at the core, while the winding arms form a flattened disk that spirals outward. Those arms are where gas and dust concentrate and new stars form, giving the arms their bright, patterned appearance. Elliptical galaxies lack a disk and spiral arms, appearing more like smooth ellipsoids. Irregular galaxies have no regular shape, and lenticular galaxies have a disk and bulge but no visible spiral arms. So the combination of a central bulge plus winding arms points to a spiral galaxy.