The principle of the vernal point acting as the first degree of the zodiac for Greek astronomers is also described in the 1st century BC astronomical text of Geminus of Rhodes. Geminus explains that Greek astronomers of his era associate the first degrees of the zodiac signs with the two solstices and the two equinoxes, in contrast to the older Chaldean Babylonian system, which placed these points within the zodiac signs. Ptolemy also demonstrates that the principle of the tropical zodiac was well known to his predecessors within his astrological text, the Tetrabiblos , where he explains why it would be an error to associate the regularly spaced signs of the seasonally aligned zodiac with the irregular boundaries of the visible constellations:.
These events can be useful, for example, to estimate the cross-sectional dimensions of a minor planet , or check a star for a close companion. The Sun's placement upon the vernal equinox, which occurs annually around 21 March, defines the starting point for measurement, the first degree of which is historically known as the " first point of Aries ". Zodiac signs have never been used to determine the boundaries of astronomical constellations that lie in the vicinity of the zodiac, which are, and always have been, irregular in their size and shape. The use of the zodiac as a means to determine astronomical measurement remained the main method for defining celestial positions by Western astronomers until the Renaissance, at which time preference moved to the equatorial coordinate system , which measures astronomical positions by right ascension and declination rather than the ecliptic-based definitions of celestial longitude and celestial latitude.
The word "zodiac" is also used in reference to the zodiacal cloud of dust grains that move among the planets, and the zodiacal light that originates from their scattering of sunlight. In Unicode, the symbols of zodiac signs are encoded in block "Miscellaneous Symbols": .
From Wikipedia, the free encyclopedia. This is the latest accepted revision , reviewed on 5 October For the East Asian zodiac based on the Jovian orbital cycle, see Chinese zodiac. For other uses, see zodiac disambiguation. Further information: Former constellations. Further information: Babylonian star catalogues and MUL. Main article: Astrological sign. Further information: Axial precession , Epoch astronomy , Sidereal and tropical astrology , Astrological age , and Ayanamsa.
Astronomical symbols Chinese zodiac Circle of stars Cusp astrology Elements of the zodiac. Oxford Dictionaries. Oxford University Press. Retrieved 19 September The Signs of the Zodiac. Wilcox, London, p.
See also Lankford, John; Rothenberg, Marc History of Astronomy: An Encyclopedia. The Almagest. Translated and annotated by G. Toomer ; with a foreword by Owen Gingerich. The introduction of the uniform zodiac", Archive for History of Exact Sciences , 64 6 : —, doi : The Mesopotamian traditions. Astronomical Data Service. Page Lennart Geminos's Introduction to the Phenomena. Princeton University Press. Ptolemy's Tetrabiblos. Astrology Classics. Project Hindsight.
Retrieved 4 July Hinduism: An Alphabetical Guide. Penguin Books India. London: Board of Longitude, Patrick Grim ed. Philosophy of science and the occult. Ptolemy's Catalogue of Stars: a revision of the Almagest. Carnegie Institution of Washington, Catesby Taliaferro ed.
Ptolemy refers to the constellation as Septentarius "the serpent holder". October The Observatory. Bibcode : Obs He later issued a statement to say he had not reported that the zodiac ought to include 13 signs instead of 12, but was only mentioning that there were 13 constellations; reported in Mad Astronomy : Why did your zodiac sign change?
Around mid month, some of you may be strongly attracted to an older person or someone in authority-sounds pretty kinky to me! If your Aries girlfriend shoves a turkey leg in you mouth at the holiday dinner table, you either said something wrong, or you made an offhand remark and she thought you were talking about her. Have a Happy Thanksgiving! The beginning of the month is pretty sucky for most of you. Trouble with partnerships, nasty scenes with someone older or an authority figure and an ugly incident with an important person in your life are a just few of the things you can look forward to.
Some of you may also get the feeling that nobody likes you. Gee, ya think? A pissy attitude will just come back to haunt you. Happy Holidays!
Airy Geminis are very versatile, restless and busy people. The natural communicator of the Zodiac, they love to talk, learn and pass on information throughout life. They like to be involved with multiple projects, thoughts or ideas all at the same time, leaving many with ill-disciplined minds and a lack of continuity or interest.
They are often clever when it comes to new ideas, and dextrous with their hands, which they often use as an aid to explanation and in their career or job. A need at some time of life to discipline the mind and attain qualifications. You dislike routine, and prefer to be on the go, out and about curious about new ideas.
You may not age as fast as other people, because of your interest in learning. Mercury is the Ruling Planet for Gemini. Mercury known as Hermes to the Greeks was the Messenger between the Gods, and is depicted with winged helmet and sandals for speedy flight. He is the patron God of travellers orators, trade, business, but also of cheats and thieves.
Each of the 12 signs is represented by a Symbol and if you look closely at these symbols you will see they do reflect many of the characteristics of their sign. They are children with a love of life with curious faces.
Holding hands, but being pulled by conflicting energies, by their other side. Interestingly, many sets of twins are born under Gemini. You feel better about yourself than in the past, you are more creative and full of enthusiasm. Throughout the year, you will doubt your choices, but when the time comes, you will be tenacious.
In love, even your partner will notice your change, which will eventually make her think about the future of your relationship. If you can tame the tendency to fret, worry, and overthink things now, you can get a lot of things done. It's a great time to shape up your daily routines. Even so, it makes sense to be flexible in the face of changes in these areas. Energetic Mars spends the better part of the month in your creative and romantic sector.
Pleasure, self-expression, and entertainment can be areas of life that are stimulating, energizing, and animated. From the 4th, you're in a vigorous, stimulating period, particularly for competitive activities, games, hobbies, dating, children, romance, and creative pursuits. This transit can support your efforts to pursue your heart's desire, particularly if you've needed more courage to go after what you want confidently. You're more confident, involved, and spirited. You more often seize opportunities as they arise this month.
2 days ago Gemini: here are your general predictions for the day October Gemini: Your daily horoscope - October Astrofame. 19 hrs ago Sagittarius. Nov Dec 21 Your Weekly Horoscope Stars: October 7 - Astrofame. December 7 Zodiac is Sagittarius - Full Horoscope Personality and Gemini sun sign people are the best in the zodiac and highlight.
Romance can become heated, and this can be stimulating or challenging. Still, you're likely to enjoy warm, happy exchanges with others that lift your spirits. You want to start fresh or breathe new life into your creative or romantic world, and your interactions are positive and focused on a bright future.
Someone in your life can boost your confidence or inspire you to improve. You seem to come to solutions instinctively and not necessarily in logical ways, applying your creativity to practical matters. You have a stronger desire to make and produce beautiful things, and you may be thinking about ways to turn dreams into products, systems, or plans.
You are motivated to be more productive and useful in your communications, and others tend to appreciate your insight, particularly people with whom you work or spend frequent time. The year is potentially very strong for those of you seeking a happy partnership, dear Gemini. Others tend to be supportive, helpful, and positive forces in your life. Challenging relationships, or challenges IN relationships, tend to be left behind in At the same time, you have some sorting to do in your intimate life or regarding shared finances, emotional and financial support.
Saturn and Pluto continue to push through your intimacy sector, demanding you straighten things out. This can mean dealing with or managing debt to better serve you and your future. Saturn, in fact, is not as worried about short-term happiness as it is concerned with long-term success. So, if you need to deal with some temporary discomfort related to finances, relationships, and personal comfort in order to straighten out your life, then Saturn is okay with it. For example, if you are dependent on someone or something, such as through an unhealthy habit or addiction, the detox period can be challenging, but totally worth it in the long run.
By March, Uranus finally moves on from your friendship sector. This can mean your social life settles down, becoming more predictable, or at least, less uncertain. Uranus has been bringing excitement and some unreliability with friends, groups, and associates for years. Now, Uranus is moving on. This may be a time of radical changes in alliances and allegiances.
Aim to free yourself from outdated ideas and attitudes that are keeping you attached to unhealthy paths.