The Hubble classification description for an S0 galaxy is a
A) small central bulge with loosely wound spiral arms.
B) disk and central bulge with a smooth light distribution and no spiral arms.
C) large central bulge with tightly wound spiral arms.
D) round or spherical shape with a smooth light distribution and no disk or central bulge.

Question

Quizplus · Accepted Answer

The Hubble classification describes an S0 galaxy as having a disk and central bulge with a smooth light distribution and no spiral arms, distinguishing it from spiral galaxies which have visible arms and elliptical galaxies which lack a disk structure.

The Hubble Classification Description for an S0 Galaxy Is a