Does the Milky Way Have an Orbit? Exploring Galactic Motion
The Nature of Galactic Motion
The Milky Way, our home galaxy, is not stationary in the vast universe. It moves through space, influenced by various forces and objects around it. One significant influence on our galaxy is the Local Group, a collection of over 54 galaxies that includes the Milky Way, Andromeda, and several smaller galaxies.
The Milky Way and Andromeda are the two largest galaxies in this group and their mutual gravitational pull causes them to move towards each other, eventually set to collide in about 4.5 billion years.
Gravitational Influences
While the Milky Way is primarily influenced by the gravity of the Local Group, it's also affected by the gravity of the Virgo Supercluster, a larger assembly of galaxies. The Local Group itself is part of this supercluster, which exerts a substantial gravitational pull on its member galaxies. However, this gravitational influence is less direct compared to the immediate interactions within the Local Group. Additionally, there is a gravitational phenomenon called the Great Attractor, a region in space with a strong gravitational pull that affects the movement of the Local Group and other galaxy clusters.