Planet Mercury is not only retrograde at the moment (appearing to move backwards), it's also moving across the sun, in a relatively rare transit on 8th November.
Last time was May of 2003, but you'll have to wait till 2016 to catch it again. Much like eclipses it depends on where you live in the world as to whether you'll be able to see it as it happens - there's a map with this news report so you can check if you are one of the lucky ones.
Mercury is the messenger planet, associated with all forms of communication and information. It's the planet that joins the dots, and looks for patterns and similarities. It rules the signs of Gemini the twins, and Virgo, the sign of health and medicine.
Currently moving through the deep and secretive sign of Scorpio, Mercury might not be comfortable being so visible, so maybe it's a time when sensitive secrets are revealed. The retrograde influence could mean a link to the past, a return or a reconnection, maybe there's some light shed on a long-standing mystery; however there's no real way to know exactly how this transit energy might manifest until the event itself
More info on Mercury transits here, and here.