Binary star systems come in many combinations of star mass and star separation. Energetic subsets are those systems that emit X-rays. This talk will review X-ray emitting binary stars, and show how one such system, Cygnus X-3, seems to upset much of what we understood.
Many bizarre phenomena have been attributed to Cygnus X-3 (do you remember 'Cygnets'?), but how much of this is now established fact? How peculiar is this object?