What is the basic shape of a spiral galaxy?
A) round, flat disk with long lanes of stars that curve outward from a round, nuclear region bulging out of the disk
B) round, flat disk with long lanes of stars that curve outward from the center of the galaxy
C) approximately spherical with long lanes of dark dust clouds curving through it in a spiral pattern
D) round, thin disk of uniform brightness with its edges bent up and down into a spiral shape

Question

Quizplus · Accepted Answer

Spiral galaxies are characterized by a round, flat disk with long lanes of stars curving outward from a central bulge. This bulge is a round, nuclear region that protrudes from the disk, distinguishing spiral galaxies with their distinct features.

What Is the Basic Shape of a Spiral Galaxy