Will we ever solve the mystery of diffuse interstellar bands?

There are dark lines in space, and they hide in the light. We've known that they're there for nearly a hundred years, but we still don't know what they actually are. All we know is what we call them - diffuse interstellar bands - and that they mean that something is out there in space that we haven't identified. » 2/22/13 12:40pm 2/22/13 12:40pm