Mercury, much like the winged messenger of the gods, comes in on feather-light wings and commands us to speak. Communication, intellect and awareness are all within Mercury's domain, as are logic and reasoning, our manner of thinking, and how we create and express our thought processes.
A mercurial nature brings to mind restlessness and motion. Rat-a-tat-tat -- things happen fast here. Mercury is about a quick wit, quick thinking, possibilities, opinions, reasoning and the ability to rationalize things. Mercurial energy can be good or bad, but it will certainly be energizing! This planet also prompts us to move from one thing to the next and to get answers on both a physical and psychological level. Further, Mercury's energy is both dexterous and perceptive.
Mercury is about short trips: a visit to a neighbor or a friend across town, the workaday commute, a weekend getaway. Siblings, and transportation in general, are also within Mercury's realm.
Speaking, writing, books, online communications and learning are all within Mercury's domain. This planet implores us to express ourselves often -- and well. When Mercury goes retrograde (the appearance of traveling backward), however, our communications will be challenged.
Mercury is never more than 28 degrees from the Sun; it takes about 88 days to complete its orbit of the Sun. It is neither masculine nor feminine energy and assumes the gender of the sign it is in. It rules both Gemini and Virgo, and the Third and Sixth Houses.