It’s true, or as true as we can determine anyway… the Milky Way is going to collide with the Andromeda Galaxy… don’t worry though it’s not due to happen for… ooh, about another four or so billion years, and Earth and the Solar System are apparently not in any danger… Oh good.
Series of photo illustrations showing merger between milky way and andromeda
source: http://www.nasa.gov/mission_pages/hubble/science/milky-way-collide.html