Astronomy Ain't Astrology

Mosaic pavement of 6th century synagogue at Beit Alpha, Jezreel Vailey, northern Israel. Signs of Zodiac surround the central chariot of the Sun, while the corners depict the 4 turning points of the year, Solstices and Equinoxes. 
looking at who we are right now, what are we doing, or how we become we are right now, are something that many people believe somehow connected to each of their zodiac signs - the ancient art of reading ones' personality (and some believe: future, faith, and fate). these zodiac signs matters have been started since 1000 BC (and around 1st millennium age that also known as Iron Age), some even existed older since Bronze Age (between 3000 BC-1200 BC), and have been used afterwards for many necessity - such as giving direction to sailors and wanderers, telling the farmers when is the right time to crop their fields - but mostly to tell people about their personality traits, fate, future, way to solve their problems, their love compatibility with other signs, and other things about their lives specifications.

taking the definition of Zodiac from Wikipedia, it is said that:
"the zodiac (Greek: ζῳδιακός, zōdiakos) is the ring of constellations that lines the ecliptic, which is the apparent path of the Sun across the celestial sphere over the course of the year. The paths of the Moon and planets also lie roughly within the ecliptic, and so are also within the constellations of the zodiac. In astrology, the zodiac denotes those signs that divide the ecliptic into twelve equal zones of celestial longitude. As such, the zodiac is a celestial coordinate system, or more specifically an ecliptic coordinate system, taking the ecliptic as the origin of latitude, and the position of the sun at vernal equinox as the origin of longitude."
cut the whole crap about astronomy thingy, i know that for amateurs this uncommon words are frustrating. the main definition of zodiac is about those constellations that has been passed by the sun during the whole year. zodiac separate our sky into 12 parts equally and actually is another way to coordinate astronomy things that appeared in our sky. just like how we use geographic coordinate system to tell the exact position of a city (e.g. 6° 7′ 59.88″ S, 106° 45′ 0″ E for Jakarta, Indonesia), but for zodiac it's more like telling us position of one star or moon or else that appears in our sky.
this picture tells pretty much how we define the zodiac from our point of view (earthly-view)
i am myself, don't really buy these craps - the whole zodiac and fortune telling through your date of birth thingy. ever since i started to study astronomy in high school i believe that constellations are nothing but humans' interpretation of a form that made by the shiniest star with a group of the closest stars. different person could tell a different shape of that abstract form, just like how we do the cloud gazing - until Babylonian people made a constellations catalog so then there'll be one interpretation for one stars form. but i do believe in other uses for constellation, like giving direction, telling times and seasons, and other RATIONAL uses. and i also believe in purpose of Zodiac Signs to split our sky into 12 parts equally to easier astronomer's job locating celestial bodies, NOT for other psychic thingy.

responding to the fuzzy issue about the 13th Zodiac Signs: Ophiuchus, i'd like to say that it's nothing but a crap. ophiuchus IS a constellation, but will never be a part of zodiac signs (that split our sky into 12 parts equally). Ophiuchus is off the the ecliptic - the path of the sun through the sky in a year - and won't ever join the antique coordinate system of zodiac. Babylonian did have 13 zodiacs but leave alone ophiuchus then made the other 12 to split the sky equally. other than that even other cultures and beliefs have 24 constellations of the zodiac, so there might be other "ophiuchus" that people believe should be putted on zodiac as well.

according to the Zodiac calender, i supposed to be a Virgo. i know some main characters that appear in Virgos - detail oriented, impatient, cleanliness freak, everything has to be on its place, etc - BUT i think that it's only a fluke, nothing rational could tell the exact numbers of people that born under the Virgo sign owns these characters and why does this happens. what i believe is how i become who i am right now is quite much because of the way my parents raised me and the surroundings at the time i grew up and do the living, not because of some aligned stars - whom their twinkles have traveled zillions lightyear - telling me how to.

meanwhile, as an amateur astronomer who loves sky and its art of our Universe's derivation, i'd like to once again emphasize that Astrology is NOT a part of Astronomy. it's a whole different sciences (i'm not even sure that astrology is a science) that were not ever related one-another. please do kindly remember this whenever there's an astrology issue, astronomers got not a single thing related to it, maybe psychics got something to say (it's probably a hoax anyway).