The type of galaxy that has arms containing sites of active star formation is ; Spiral galaxy
Spiral galaxies are made up of a collection of stars and gas that are characterized by beautiful shapes and younger stars. spiral galaxies also have a bulge in their center which is usually surrounded by rotating flat young stars.
Spiral galaxies are divided into two groups which are ;
i) normal spirals and ii) barred spirals .
while some of the characteristics of spiral galaxies are ;
- presence of blue disk of stars
- yellowish bulges at the center of the galaxies
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