Definitions for "Spiral Galaxy"
A class of galaxy, spiral galaxies are so named because of their spiral shape. Spiral Galaxy
Any of a large class of galaxies exhibiting a disk with spiral arms.
A galaxy with a prominent nuclear bulge and luminous spiral arms of gas, dust, and young stars that wind out from the nucleus.
an expression for a disc-shaped vortex whose opponent could be a DNA molecule, which describes a nearly infinite long thread-shaped vortex