Babylonian astronomers split the ecliptic into 12 equal “signs” at the end of the 5th century BC, analogous to 12 schematic months of 30 days each. The first known celestial coordinate system was created when each sign contained 30 degrees of celestial longitude. According to contemporary astronomical estimates, the zodiac was first used between 409 and 398 BC, during Persian dominance, and most likely within a few years of 401 BC. Unlike modern astrologers, who place the beginning of the sign of Aries at the position of the Sun at the Northern Hemisphere’s vernal equinox (March equinox), Babylonian astronomers fixed the zodiac in relation to stars, placing the beginning of Cancer at the “Rear Twin Star” (Geminorum) and the beginning of Aquarius at the “Rear Star of the Goat-Fish” ( Capricorni).
Since Babylonian times, the time of year when the Sun is in a certain constellation has altered due to equinox precession; the point of March equinox has moved from Aries to Pisces.
They formed a perfect system of reference for making predictions about a planet’s longitude since they were divided into 30 equal arcs. However, Babylonian observational measurement techniques were still in the early stages of development. They measured the position of a planet in relation to a group of “normal stars” near the ecliptic (9 degrees latitude) as observational reference points to aid in planet placing inside the ecliptic coordinate system.
A planet’s location in Babylonian astrological journals was usually stated in terms of a zodiac sign alone, rather than particular degrees within a sign. When degrees of longitude were given, they were stated in terms of the 30th degree of the zodiac sign, rather than the continuous 360 ecliptic. The positions of prominent astronomical phenomena were estimated in sexagesimal fractions of a degree in astronomical ephemerides (equivalent to minutes and seconds of arc). The daily locations of a planet were less important in daily ephemerides than the astrologically significant times when the planet moved from one zodiac sign to the next.
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Who designed the zodiac signs?
The 12 zodiac signs, one of the earliest notions of astrology, were devised by the Babylonians around 1894 BC. The Babylonians lived at Babylon, which is roughly where modern-day Iraq is located. Babylon was one of the most prominent ancient Mesopotamian towns.
What were the origins of the zodiac signs?
Early astronomers witnessed the Sun passing through the Zodiac signs in a year’s time, spending roughly a month in each. As a result, they determined that each constellation covers 30 degrees of the ecliptic.
However, due to a phenomenon known as precession, the positions of the constellations we see now have changed.
The zero point of the Zodiac used to designate the beginning day of spring in the Northern Hemisphere. The vernal equinox happens when the ecliptic and celestial equator collide, according to astronomers.
The zero point existed in Aries around 600 BCE, and it was known as the “first point of Aries.” (See Figure 1). The constellation Aries covered the first 30 degrees of the ecliptic; Taurus covered the next 30 degrees; Gemini covered the next 60 degrees; and so on for all twelve constellations of the Zodiac.
The Earth wobbles around its axis in a 25,800-year cycle, which ancient astrologers were unaware of. The gravitational attraction of the Moon on Earth’s equatorial bulge causes this wobble, known as precession.
This wobble has led the junction point between the celestial equator and the ecliptic to migrate west along the ecliptic by 36 degrees, or nearly one-tenth of the way around, over the past two and a half millennia. This indicates that, in relation to the stars beyond, the signs have moved one-tenthor almost a month around the sky to the west.
For example, persons born between March 21 and April 19 are considered Aries. During much of that time, the Sun was no longer in the constellation of Aries. The Sun is actually in the constellation of Pisces from March 11 to April 18! (See Illustration 2) See also Figure 3, which depicts the equinox precession from 600 BCE to 2600 CE.
The dates when the Sun is truly within the astronomical constellations of the Zodiac, as defined by contemporary constellation borders and corrected for precession, are listed in the table below (these dates can vary a day from year to year).
When precession is taken into consideration, your zodiac sign will most likely be different. And if you were born between November 29 and December 17, your zodiac sign is one you’ve never heard of before: Ophiuchus! After Scorpius, the eliptic crosses across the constellation of Ophiuchus.
Visit the Birthday Sky program to view what the sky looked like on your birthday and to learn more about your “true zodiac sign.”
Constellations Image Gallery
What is the zodiac’s age?
2,500 years ago, during the “Age of Aries,” the zodiac system was created in Babylonia. It is assumed that the precession of the equinoxes was unknown at the time. In modern use of the coordinate system, the option of interpreting the system as sidereal, with the signs fixed to the stellar backdrop, or tropical, with the signs fixed to the point (vector of the Sun) at the March equinox, is offered.
The tropical technique is used in Western astrology, but the sidereal approach is used in Hindu astrology. As a result, the once-unifying zodiacal coordinate system is gradually drifting apart, with a clockwise (westward) precession rate of 1.4 degrees each century.
This means that the tropical sign of Aries is currently located somewhere within the constellation Pisces, according to the tropical zodiac used in Western astronomy and astrology (“Age of Pisces”).
The ayanamsa, ayan meaning “transit” or “movement,” and amsa meaning “little part,” or the movement of equinoxes in small sections, is taken into account by the sidereal coordinate system. It is unclear when Indians first became aware of the precession of the equinoxes, but Bhskara II’s 12th-century treatise Siddhanta Shiromani contains equations for measuring the precession of the equinoxes, and claims that his equations are based on some lost Suryasiddhanta equations plus the Munjaala equation.
Hipparchus is credited with discovering precession in 130 BC. In the seventh book of his 2nd century astronomical literature, Almagest, Ptolemy draws from Hipparchus’ now-lost work “On the Displacement of the Solstitial and Equinoctial Points,” in which he describes the phenomena of precession and calculates its importance. Ptolemy stated that in Greek mathematical astrology, the zodiac was always started at the vernal equinox, and this point was always referred to as “the first degree” of Aries. Because its starting point travels across the circle of backdrop constellations throughout time, it is known as the “tropical zodiac” (from the Greek word trpos, turn).
In Geminus of Rhodes’ 1st century BC astronomical book, the principle of the vernal point acting as the first degree of the zodiac for Greek astronomers is described. In contrast to the older Chaldean (Babylonian) system, which placed these points within the zodiac signs, Geminus explains that Greek astronomers of his era associate the first degrees of the zodiac signs with the two solstices and the two equinoxes. This shows that, contrary to popular belief, Ptolemy merely clarified Greek astronomical conventions and did not invent the tropical zodiac principle.
In his astrological text, the Tetrabiblos, Ptolemy demonstrates that the principle of the tropical zodiac was well known to his forefathers, explaining why it would be a mistake to associate the seasonally aligned zodiac’s regularly spaced signs with the irregular boundaries of the visible constellations:
The equinoctial and tropical points are used to determine the beginnings of the signs, as well as the starts of the terms. This rule is not only stated explicitly by writers on the subject, but it is further demonstrated by the constant proof that their natures, effects, and familiarities have no other origin than the tropics and equinoxes, as has already been demonstrated. And, if other beginnings were permitted, it would either be necessary to exclude the natures of the signs from prognostication theory, or impossible to avoid error in retaining and employing them, because the regularity of their spaces and distances, on which their influence is based, would be invaded and broken into.
Is there any truth to the zodiac signs?
Is astrology accurate? Reading horoscopes is a popular pastime, but is there any scientific evidence that they are accurate?
When you’re enticed by a familiar interruption and your willpower weakens, problems can occur.
Every day, up to 70 million Americans consult their horoscopes. At least, that’s what the American Federation of Astrologers claims. According to a Pew Forum on Religion & Public Life poll conducted twenty years ago, 25% of Americans believe that the positions of the stars and planets have an impact on our daily life. In 2012, the General Social Survey indicated that 34% of Americans think astrology is “extremely” or “kind of scientific,” with the percentage of individuals who think astrology is “not at all scientific” dropping from two-thirds to about half.
Astrology is the concept that astronomical phenomena, such as the stars over your head when you were born or the fact that Mercury is retrograde, have the potential to influence our daily lives and personality traits. Of course, this is distinct from astronomy, which is the scientific study of celestial objects, space, and the physics of the cosmos.
A particular facet of astrology, the foretelling of a person’s future or the provision of daily counsel via horoscopes, is gaining in popularity. The Cut, for example, recorded a 150 percent rise in horoscope page views in 2017 compared to 2016.
Clearly, a lot of people are trying to figure out how to read the stars for guidance. Understanding the positions of the stars is the foundation of astrology, which appears to be a scientific discipline in and of itself. Is there any scientific evidence that astrology has an impact on our personalities and lives?
But, since I still have five minutes of this six-minute podcast to fill, let’s take a look at how astrology has been put to the test.
Who developed the 12 signs of the zodiac?
The 12 zodiac signs, with which many people are likely familiar today, were created during this Ancient Greek period.
The signs of Aries (approximately March 21-April 19), Taurus (April 20-May 20), Gemini (May 21-June 20), Cancer (June 21-July 22), Leo (July 23-Aug. 22), Virgo (Aug. 23-Sept. 22), Libra (Sept. 23-Oct. 22), Scorpio (Oct. 23-Nov. 21), Sagittarius (Nov. 22-Dec. 21 These Western, or tropical, zodiac signs were named after constellations and paired with dates based on their apparent relationship to the sun’s position in the sky.
By 1500 BC, the Babylonians had divided the zodiac into 12 equal signs, with constellation names that were similar to those we know today, such as The Great Twins, The Lion, and The Scales, and these were later adopted into Greek divination. These 12 signs were popularized by the astronomer Ptolemy, author of the Tetrabiblos, which became a key work in the history of Western astrology.
“Ptolemy codified the idea that there were 12 signs of the zodiac that were 30 broad, and that the sun travelled through these signs on a regular basis throughout the year,” adds Odenwald. According to the Oxford English Dictionary, the word “zodiac” derives from the Greek, from a term for “sculpted animal figure,” and the sequence in which the signs are normally enumerated also stems from that time period.
When did the Zodiac begin murdering?
The shootings of high school students Betty Lou Jensen and David Arthur Faraday on Lake Herman Road, just beyond Benicia city boundaries, on December 20, 1968, were commonly linked to the Zodiac Killer. The couple was out on their first date and had planned to go to a Christmas concert at Hogan High School, which was about three blocks from Jensen’s house. Instead, they went to see a friend, then stopped at a small eatery before driving out on Lake Herman Road. Faraday parked his mother’s Rambler on a gravel turnout, which was a well-known lovers’ lane, at 10:15 p.m. Stella Borges, who lived nearby, discovered their dead just after 11:00 p.m. The crime was investigated by the Solano County Sheriff’s Department, but no leads were found.
Using forensic evidence, Robert Graysmith hypothesized that another car pulled into the turnout shortly before 11:00 p.m. and parked next to the couple. The assailant may then have exited the second vehicle and walked toward the Rambler, potentially ordering the pair out. Jensen appeared to have exited the car first, but the killer shot Faraday in the head as he was halfway out. Jensen was shot five times in the back as she fled, and her body was discovered 28 feet from the automobile. The assailant then drove away.
What does the Bible have to say about the zodiac signs?
I believe that God created astrology as a tool for us to better understand ourselves and to use as a spiritual tool. Numerous bible texts, in my opinion, support astrology. As a Christian, I try to remember what Jesus said. “There shall be signs in the sun, moon, and stars,” Christ predicted in Luke 21:25, referring to the importance of astrology. He explains the value of astrology with his pupils, as well as how it might be used as a sign of his return. Why would Jesus provide us this critical knowledge if we are not intended to understand the energies of the planets and signs, and if he was actually against it? Just as the three wise men knew Jesus would be born under the star in the sky that led them to him lying in the manger, Jesus warned us that when he returns, there will be signals in the sky.
Which zodiac is the oldest?
The Latin term for “fishes” is “pisces.” The two fish first appeared on an Egyptian coffin lid around 2300 BC, making it one of the oldest zodiac signs known.
Pisces depicts the fish, sometimes portrayed by a shark, into which Aphrodite (also known as Venus) and her son Eros (also known as Cupid) turned in order to flee the demon Typhon, according to one Greek tale. Gaia had sent Typhon, the “father of all monsters,” to attack the gods, prompting Pan to warn the others before transforming into a goat-fish and diving into the Euphrates. In Manilius’ five-volume lyrical work Astronomica, a similar narrative, in which the fish “Pisces” save Aphrodite and her son from danger, is retold: “Venus ow’d her safety to their Shape.” Another urban legend claims that an egg landed in the Euphrates River. The fish then rolled it to the shore. Doves sat on the egg until it hatched, and Aphrodite emerged. Aphrodite threw the fish into the starry sky as a gesture of thanks to the fish. The constellation Pisces was also known as “Venus et Cupido,” “Venus Syria with Cupidine,” “Venus cum Adone,” “Dione,” and “Veneris Mater,” the latter being the formal Latin name for mother, due to these traditions.
The Greek myth of Pisces’ genesis has been highlighted by English astrologer Richard James Morrison as an example of myths that emerged from the original astrological teaching, and that the “original aim ofwas thereafter distorted both by poets and priests.”
What is the age of a Virgo?
The sign of Virgo is all about establishing oneself as a responsible adult who is methodically making their way through life. In whatever they do, Virgos prioritize information, intellect, and details, and at this age, people value knowledge more than ever. Virgos enjoy routine, and by the time they reach their mid- to late-thirties, they have settled into their careers and lives.
Virgos enjoy helping others, and at this age, people are gradually becoming more unselfish and realizing that there are problems outside of their own sphere that they may help solve. At this age, you also have a desire to be more practical and down-to-earth, signaling your transition into adulthood.
Is it true that we are living in the Age of Pisces?
Astrologers agree that astrological ages last about 2000 years, and we’ve been in the age of Pisces for the past two millennia.