Difference between revisions of "Spiral galaxy"
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A '''spiral galaxy''' is a [[galaxy]] consisting of a rotating disk of [[star]]s, [[gas]] and [[dust]] which has two arms that extend outwards from the central bulge. | A '''spiral galaxy''' is a [[galaxy]] consisting of a rotating disk of [[star]]s, [[gas]] and [[dust]] which has two arms that extend outwards from the central bulge. | ||
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| + | The [[milky way]] is a spiral galaxy. | ||
[[Category:Astronomy]] | [[Category:Astronomy]] | ||