That Wikipedia article is probably about as good as you're going to get as an explanation.Imax said:
Imax said:Barred galaxy = merger of 2 galaxies?
A bared galaxy is a type of galaxy that has a distinct bar-shaped structure in its center. This structure is made up of stars and can extend outwards from the center of the galaxy. The Milky Way is classified as a bared galaxy.
The exact formation process of the Milky Way's bar structure is still not fully understood. However, it is believed that interactions with other galaxies and the gravitational pull of nearby objects played a role in shaping the Milky Way's bar.
The bar in the Milky Way serves as a way to funnel gas and dust towards the center of the galaxy, allowing for the formation of new stars. It also helps to maintain the spiral arms of the galaxy and stabilize its rotation.
No, not all spiral galaxies have a distinct bar structure. It is estimated that only about one third of spiral galaxies are bared galaxies, with the remaining two thirds having a more traditional spiral shape without a bar.
The Milky Way's bar is constantly changing and evolving due to interactions with other galaxies and the overall evolution of the galaxy. It is possible that in the future, the Milky Way may lose its bar structure or even develop a new one. However, it is difficult to predict the future evolution of the Milky Way with certainty.