When the Andromeda galaxy and the Milky Way collide, it is highly unlikely that we would remain completely unaffected. The collision between these two galaxies, which is predicted to occur in about 4 billion years, will have significant consequences for both galaxies and their constituent stars and planets.
During the collision, the galaxies will undergo gravitational interactions and tidal forces, leading to a major restructuring of their structures. Stellar systems, including stars and planets, will be affected by these gravitational interactions, leading to disturbances in their orbits. However, the chances of individual stars colliding with each other or being ejected from their galaxies are relatively low due to the vast distances between them.
The collision will likely trigger a period of intense star formation as gas and dust clouds collide and collapse under gravitational forces. This could potentially lead to the formation of new stars and planetary systems. However, the overall effects on individual star systems, such as our solar system, would depend on their specific trajectories and interactions within the merged galaxy.
While it is difficult to predict the exact outcome of such a collision with certainty, it is safe to say that the collision between the Milky Way and Andromeda will have profound effects on both galaxies and the systems within them. It is unlikely that our solar system would remain completely unchanged, although the exact nature of the changes would depend on a range of factors.