The Milky Way is which type of galaxy?

The Milky Way is which type of galaxy?

• A. Elliptical
• B. Irregular
• C. Spiral
• D. Lenticular

Answer: (C)

Galaxies are categorized by their shapes, and the Milky Way fits a spiral pattern. It has a flattened disk with spiral arms winding out from a central bulge, plus a lot of gas and dust that fuels ongoing star formation. From inside the disk, we observe arm-like structures and see younger stars clustered in the arms, with our Sun located in one of these arms (the Orion Arm). Spiral galaxies typically show this combination of a rotating disk and distinct spiral arms, along with active star formation. Elliptical galaxies are more rounded and dominated by older stars with little gas or new star formation. Irregular galaxies lack a defined shape altogether. Lenticular galaxies have a disk shape but do not show prominent spiral arms and have little ongoing star formation. Because the Milky Way clearly exhibits spiral structure, it is classified as a spiral galaxy.

Galaxies are categorized by their shapes, and the Milky Way fits a spiral pattern. It has a flattened disk with spiral arms winding out from a central bulge, plus a lot of gas and dust that fuels ongoing star formation. From inside the disk, we observe arm-like structures and see younger stars clustered in the arms, with our Sun located in one of these arms (the Orion Arm). Spiral galaxies typically show this combination of a rotating disk and distinct spiral arms, along with active star formation.

Elliptical galaxies are more rounded and dominated by older stars with little gas or new star formation. Irregular galaxies lack a defined shape altogether. Lenticular galaxies have a disk shape but do not show prominent spiral arms and have little ongoing star formation. Because the Milky Way clearly exhibits spiral structure, it is classified as a spiral galaxy.