Because of their trajectories. The commonly accepted theory of the Big Bang sent literally everything everywhere. Though some galaxies are composed completely differently then others, out of different materials, with different densities, shapes, and sizes. These inconsistencies coupled with the numerous other factors (forces – like gravity and dark energy) out there cause galaxies to move at different speeds and in slightly different directions culminating in inevitable collisions.
Click here to cancel reply.
Sorry,At this time user registration is disabled. We will open registration soon!
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC