UniversePisces–Cetus Supercluster ComplexLaniakea SuperclusterVirgo SuperclusterLocal GroupMilky Way Galaxy

The Milky Way Galaxy is the barred spiral galaxy containing the planet Earth and its star system, among roughly 100 to 400 billion others.

It has a mass of around 1012 solar masses, much of which is dark matter in the halo surrounding the galaxy.


As a barred spiral galaxy, with a Hubble classification of Sbc (spiral arms medium-loosely bound), the milky way is made up of a central bar as well as multiply spiral arms. The four arms, as well as the central bar, are the:

There are also multiple minor arms, branching off existing arms as spurs, including the:

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