Characteristics of a Galaxy
A Galaxy is a
large group of
stars, gas, and
dust
held tighter by
gravity.
Types of Galaxies
Spiral Galaxy
*Have spiral areas that
wind outward from inner
regions.
*The arms are made up
of stars and dust.
*Milky Way (our universe
is a spiral).
*Brightest stars.
*Most common galaxy.
Types of Galaxies
Elliptical Galaxy
*Shaped like large
three –dimensional
ellipses.
*Oldest stars.
Types of Galaxies
Irregular Galaxy
*Have many shapes
*Smaller than other
types of galaxies.
*Newest stars.
Universe from Largest to Smallest
Universe
Galaxy
Solar System
Planet