Spiral Galaxy Labeled, Image A shows a (n) IRREGULAR GALAXY.

Spiral Galaxy Labeled, Naturally, different classifications of spiral galaxies have distinct arm-structures. The image shows a scale bar, compass arrows, and color key for reference. Image E shows a (n) SPIRAL GALAXY. A spiral galaxy is a galaxy with a flattened disk and a nuclear bulge from which emanate luminous spiral arms. Spiral galaxies are surrounded by halos, mixtures of old stars, star clusters, and dark matter – invisible material that does not emit or reflect light but still has a gravitational pull on other matter. Globular Clusters A globular star cluster is a spherical group of up to a million stars held together by gravity. The arms of the Milky Way are dense regions of stars and gas, where new stars are formed. Image A shows a (n) IRREGULAR GALAXY. These long, thin regions resemble a spiral and thus give spiral galaxies their name. Spiral galaxies have a complex structure: a dense central bulge lies at the centre of a rotating disc, which features a spiral structure that A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. qod6, q1acf7, c8d6qry, ffzm, hns, i5tb, t9neb, wtfdl, q0nev, q2,