How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point) Responses Astronomers have observed their movements over time. Astronomers have observed their movements over time. The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda. The two galaxies have collided previously. The two galaxies have collided previously. All galaxies will collide at some point.
Astronomers know about the future collision of Andromeda and the Milky Way primarily because they have observed their movements over time. This provides the necessary data to predict that the two galaxies are on a collision course.
Astronomers know about the future collision of Andromeda and the Milky Way because they have observed their movements over time. The Milky Way has changed course to head toward Andromeda, indicating that a collision is likely to occur in the future. Additionally, evidence from previous collisions between galaxies suggests that the two galaxies have collided before and will likely do so again. It is important to note that not all galaxies will collide at some point, as the likelihood of collisions depends on the specific dynamics and interactions between different galaxies.
Astronomers know about the future collision between Andromeda and the Milky Way through careful observation and analysis of their movements over time. This involves studying their positions, velocities, and trajectories using advanced telescopes and other observational techniques. By measuring the apparent motion of these galaxies relative to each other, astronomers can predict their future interactions.
Furthermore, scientists have used computer modeling and simulations to simulate the evolution of both galaxies and their gravitational influences on each other. These simulations take into account factors such as their masses, distances, and gravitational forces. By running these simulations forward in time, astronomers can forecast how the galaxies will approach, interact, and eventually collide in the future.
It is important to note that the collision of Andromeda and the Milky Way is a future event that is estimated to occur in about 4 billion years. Astronomers base these predictions on the current understanding of the laws of physics and the observed behavior of galaxies in the universe. While previous galaxy collisions have been observed and studied, in this case, the future collision is inferred from observing the galaxies' movements and applying the laws of physics.
Therefore, the correct answer would be: Astronomers have observed their movements over time.