Nearly everyone knows the Pleiades in Taurus. Easily visible to the unaided eye, M45, although it looks like a mini constellation, is a true cluster - stars moving through space together. The Pleiades are the first harbinger of winter, dragging up with them the Hyades and Orion. Traces of the nebula from which the cluster was formed can be seen in the close up photograph. In Octeber 2005 Mars passed close by the Pleiades.