Well not just yet anyway, but our own galaxy the Milky Way and our nearest galactic neighbour Andromeda are currently on a collision course
speeding towards each other at 120 kilometers a second.
Admittedly this will not happen for another 2 billion years, but it will happen. Will humanity still be around? if so they will hopefully have found a new home by then, if not its curtains.
PS Beam me up Scotty!
http://www.sciam.com/article.cfm?id=...m-home&ref=rss