[Sephiroth]

Originally Posted by GrimUpNorth

If the universe is expanding, and everything is moving away from everything else, how can we be on a collision course wth Andromeda?

I've watched every episode of How The Universe Works on Discovery and still don't understand it.

I've got that one! In our "local" region, the force of gravity plays its part. That'll be going on everywhere; clusters of stuff interacting and expanding away from other clusters of stuff.

I watch "How the Universe Works" too and hold it in disrespect somewhat (not that what I think matters). It's full of "Space-Time" shit which explains nothing.