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Disc galaxy
A
disc
galaxy
is a galaxy characterized by a
disc
, a flattened
circular
volume
of
stars
. These
galaxies
may or may not include a
central
non-disc-like
region
.
Disc
galaxy types
include:
spiral galaxies
*
unbarred spiral galaxies
*
barred spiral galaxies
*
intermediate spiral galaxies
lenticular galaxies
Galaxies
that are not disc
types
include:
elliptical galaxies
irregular galaxies