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.”
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Is there a link between astrology and zodiac signs?
The 12 signs of the zodiac, as mentioned in a horoscope, are inextricably linked to the Earth’s motion through the sky. The constellations that point out the path that the sun appears to take during the year provide us with these indicators. Dates in a horoscope may appear to match to when the sun travels through each constellation. They don’t always agree, though, because astrology and astronomy are two separate systems. Plus, a closer look at the Earth, the sun, and the stars reveals that the zodiac is more complicated than you might think!
The sun’s motion through the constellations
The sun appears to pass in front of numerous constellations as Earth revolves the sun. The sun’s position in relation to distant background stars drifts in an easterly direction from day to day, much how the moon appears in a little different spot in the sky each night. It’s not as if the sun isn’t moving. Its movement is totally fictitious, owing to Earth’s own rotation around our star.
The sun appears to be in front of, or “in,” different constellations throughout the year. The sun appears in Gemini one month and Cancer the next. The dates in the newspaper’s horoscope indicate when the sun is in a specific astrological sign. For example, the sign Aries is represented by the period between March 21 and April 19. However, your astrological sign does not always indicate which constellation the sun was in when you were born.
Why the zodiac constellations don’t always align with astrological signs
We need to know a little bit more about how the Earth moves to explain why constellations no longer coincide with their respective signs. We must also discuss how we measure time.
Time is a fiendishly difficult concept to grasp, especially if we insist on using the sun and stars as our point of reference. For better or worse, our calendar is based on the seasons. The day the sun appears at its most northerly point in the sky is June 21, the approximate date of the summer solstice north of the equator and the winter solstice south of the equator. The North Pole is most inclined towards the sun at the June solstice.
The fact that the North Pole does not always point in the same direction as the background stars complicates things. Our world whirls around like a top. The Earth, like a top, wobbles! The North Pole traces a circle on the celestial sphere due to the Earth’s wobble. The wobbling is slow; it takes 26,000 years to complete one rotation. However, as time passes, the effect becomes more pronounced.
The direction of the Earth’s axis drifts somewhat throughout the course of one orbit around the sun. This means that the location of the solstice along our orbit changes by a very modest amount. The solstice occurs around 20 minutes before one full trip in front of the background stars!
Our drifting calendars
Because we base our calendar on the solstices and equinoxes (and astrologers on the signs), the Earth does not complete an orbit in a single year. The tropical or seasonal year is really a fraction of a second shorter than one full orbit (sidereal year). This means that the sun’s position in relation to the stars on any particular day varies throughout the year. For example, on June 21, a very small amount of snow falls.
However, after 2,000 years, the sun will be in a completely other constellation!
The sun was nearly halfway between Gemini and Cancer on the June solstice 2,000 years ago. The sun was between Gemini and Taurus on the June solstice fourteen years ago. In the year 4609, the June solstice point will move from Taurus to Aries, leaving Taurus behind.
When humanity formed the present Western zodiac some 2,000 years ago, the signs were roughly aligned with their respective constellations. However, the steady wobble of the Earth’s axis has led the solstice and equinox locations to shift around 30 degrees westward relative to the constellations in the intervening ages. Signs and constellations are currently around one calendar month off. They’ll be approximately two months away in another two thousand years or so.
Modern constellations and the zodiac
To make matters even more complicated, unlike astrological signs, constellations are not all the same size and shape. For the most part, the stars that make up a constellation are not physically related. They’re simply based on patterns that our forefathers noticed when they looked up at the sky, trying to make sense of it all.
The International Astronomical Union (IAU) established the constellations as sky regions, not only star patterns, in 1930. They established the boundaries we use today as a result of this. These current constellations are based on those introduced in the second century CE by Greek astronomer Ptolemy. He, in turn, took them from Babylonian scriptures dating back thousands of years. Throughout history, several societies have seen patterns in the sky that are unique to them. Some constellations are shared by many cultures (Orion is a good example), but not all.
There are actually 13 constellations that lay along the path of the sun, based on the present borders. Ophiuchus, the Serpent Bearer, sits between Sagittarius and Scorpius and is not mentioned in any horoscope. The signs stay stable in relation to the solstices and equinoxes, while the solstices and equinoxes shift westward in relation to the constellations or backdrop stars.
While the zodiac isn’t a fantastic predictor of love, fortune, or health, it is an excellent tool for better understanding the sun’s, Earth’s, and even the cultures that have come and gone on our small planet. The zodiac signs, which are drawn from constellations that line the path of the sun in the sky, trace Earth’s orbit and wobble and serve as a reminder of astronomy’s humble beginnings.
Bottom line: While you may identify the term zodiac with astrology, it also has a prestigious role in astronomy. The 12 constellations that make up the zodiac are located along the sun’s annual motion across the sky.
What is the relationship between the zodiac signs and the stars?
First and foremost, you have our permission to refer to yourself as a Lupus or a Lyra. People form attachments to a variety of constellations, not just those in the “zodiac.” Out of the 88 zodiac constellations officially classified by the International Astronomical Union, we acknowledge 13 of them. The Zodiac constellations are the ones that the Sun appears to travel through throughout the year. Of However, because the Earth revolves around the Sun and hence the Sun’s position relative to the background stars changes constantly, this motion is illusory.
The Sun appears to be travelling through Virgo the Maiden right now. The Sun will enter Libra, the Scales, at the end of October. The Sun then travels through Scorpius the Scorpion, Ophiuchus the Serpent Charmer, Sagittarius the Archer, Capricornus the Seagoat, Aquarius the Water Bearer, Pisces the Fish, Aries the Ram, Taurus the Bull, Gemini the Twins, Leo the Lion, and finally back to Virgo the Maiden, where the cycle begins again.
The Sun happened to pass through these thirteen constellations because they were oriented in such a way. We could change Earth’s orbit so that the Sun seems to pass through different constellations if we wanted to (and had supernatural powers). Lupus and Lyra, on the other hand, cannot be zodiac constellations because the Sun does not “travel through” them.
If the Sun was in that constellation when you were born, you were termed a “Virgo” or “Leo.” The astrological calendar, on the other hand, does not account for precession. The constellations aligned along the Sun’s path, called the ecliptic, shift stations slowly over time, by about one degree every 73 years, as the Earth’s poles precess over a 26,000-year period. The dates associated with the zodiac by astrologers were valid roughly 2,000 years ago. On the first day of Spring, for example, the Sun was in Aries. It is now in the sign of Pisces. As a result, astronomers continue to refer to the “First Point of Aries” on the first day of Spring (Vernal Equinox).
What is the relationship between the signs of the zodiac and the planets?
As previously stated, the luminaries are the Sun and Moon, while the “inner planets” are Mercury, Venus, and Mars. Both the luminaries and the inner planets “travel” relatively swiftly from sign to sign (at least from our vantage point here on Earth), and hence have a greater influence on day-to-day, shorter-term difficulties. Jupiter and Saturn are the next two planets, and they’re sometimes referred to as the “social planets” or “transpersonal planets” since they rule over elements of our life that have to do with interpersonal relationships. Because they are in the middle, some people may classify these two giants as either inner or outer planets. Finally, we arrive to the “outer planets,” which include Uranus, Neptune, and Pluto in official terms. These kids progress more slowly through the zodiac chart, affecting greater, more grand-scheme aspects of your life and personality, as well as society at large. When a planet is described as “benefic,” it alludes to its reputation for bringing only positive energy (Jupiter and Venus are known as benefics). “Malefic” planets, such as Saturn and Mars, on the other hand, are recognized for possessing harsher, more destructive energies (despite the fact that we love and need them!).
To understand how the planets affect us, it’s necessary to know where they are in the zodiac at any one time. Planets pass through many zodiac signs as they move across the sky, and their energy manifests differently depending on which sign they’re in, similar to applying a filter to a photograph. You’ll have to study your birth chart to find out where your natal planets are located (you can draw yours up online if you have your exact birth time, or consult a professional astrologer to help). You’ll be able to look at how you express their energy, what parts of your life they appear in, and even examine the relationships between the planets, known as aspects, once you know where each of the planets lives in your personal chart (which includes 12 astrological houses and 12 zodiac signs that overlap with said houses). So it’s not the planets themselves that cause things to happen; it’s where they’re located and how they interact with other aspects of your horoscope.
Is astrology based on any scientific principles?
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.
Astrology or astronomy: which came first?
Astrology and astronomy were once viewed as one (Latin: astrologia), and were only gradually separated with the rejection of astrology in Western 17th century philosophy (the “Age of Reason”). Astronomy was seen as the foundation upon which astrology might function during the later half of the medieval period.
They have been considered wholly independent fields since the 18th century. Astronomy is a science that studies objects and phenomena that originate outside of the Earth’s atmosphere. It is a highly studied academic discipline. Astrology is a sort of divination that employs the apparent locations of celestial objects to foretell future occurrences. It is a pseudoscience with no scientific merit.
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 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.