[sleavelessinseattle]

Isn't Andromeda the Galaxy that the Milky Way is eventually going to collide with? My poor brain may have dropped a stitch but I try to visualize us all making an intergalactic journey when I watch too much network news...Keeps me from chewing the scenery in my apt;-D

[petuniasevan]

As with many galaxy clusters, our Local Cluster has had and will have galaxies "colliding" (merging, really).
But don't wait up for the event - it's scheduled for about 5 billion years from now.

Here's a LINK to a description.

[RightWhale]

Isn't Andromeda the Galaxy that the Milky Way is eventually going to collide with?

Last night Art Bell interviewed that famous cosmologist who is working on the brane theory, I forget his name, maybe he's not quite famous yet. He said that gravity is pulling the Milky Way and Andromeda together and eventually they will merge. I don't know if that is entirely accurate, but M31 is definitely coming our way.