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The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The paths of the Moon and visible planets are also within the belt of the zodiac.
In Western astrology, and formerly astronomy, the zodiac is divided into twelve signs, each occupying 30° of celestial longitude and roughly corresponding to the constellations Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.
The twelve astrological signs form a celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude and the Sun's position at vernal equinox as the origin of longitude....
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The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The paths of the Moon and visible planets are also within the belt of the zodiac.
In Western astrology, and formerly astronomy, the zodiac is divided into twelve signs, each occupying 30° of celestial longitude and roughly corresponding to the constellations Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.
The twelve astrological signs form a celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude and the Sun's position at vernal equinox as the origin of longitude....
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Aries, 1st Star Sign, March 21 - April 19
Aries (meaning "ram") is the first astrological sign in the zodiac, spanning the first 30 degrees of celestial longitude. Under the tropical zodiac, the Sun transits this sign mostly from March 21 to April 19 each year. This time duration is exactly... |
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Taurus, 2nd Star Sign, April 20 - May 20
Taurus (Latin for "the Bull") is the second astrological sign in the present zodiac. It spans the 30–60th degree of the zodiac. The Sun is in the sign of Taurus from about April 20 until about May 21 (Western astrology) or from about May 16 to June 1... |
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Gemini, 3rd Star Sign, May 21 - June 20
Gemini is the third astrological sign in the zodiac, originating from the constellation of Gemini. Under the tropical zodiac, the sun transits this sign between May 21 and June 21. Gemini is represented by The Twins Castor and Pollux. The symbol of t... |
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Cancer, 4th Star Sign, June 21 - July 22
Cancer is the fourth astrological sign in the Zodiac, originating from the constellation of Cancer. It spans the 90° to 120° of the zodiac, between 90° and 120° of celestial longitude. Under the tropical zodiac, the Sun transits this area on average... |
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Leo, 5th Star Sign, July 23 - August 22
Leo is the fifth astrological sign of the zodiac, originating from the constellation of Leo. It comes after Cancer and before Virgo. Under the tropical zodiac, the Sun transits this area approximately between July 23 and August 22; the sign spans the... |
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Virgo, 6th Star Sign, August 23 - September 22
Virgo is the sixth astrological sign in the Zodiac. Virgo is the second-largest constellation. It spans the 150-180th degree of the zodiac. Under the tropical zodiac, the Sun transits this area on average between August 22 and September 22, and under... |
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Libra, 7th Star Sign, September 23 - October 22
Libra is the seventh astrological sign in the Zodiac. It spans the 180–210th degree of the zodiac, between 180 and 207.25 degree of celestial longitude. Under the tropical zodiac, Sun transits this area on average between (northern autumnal equinox)... |
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Scorpio, 8th Star Sign, October 23 - November 21
Scorpio is the eighth astrological sign in the Zodiac. It spans the 210–240th degree of the zodiac, between 207.25 and 234.75 degree of celestial longitude. Under the tropical zodiac, the sun transits this area on average from October 23 to November... |
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Sagittarius, 9th Star Sign, November 22 - December 21
Sagittarius is the ninth astrological sign, which is associated with the constellation Sagittarius and spans 240–270th degrees of the zodiac. Under the tropical zodiac, the sun transits this sign between approximately November 23 and December 21. Gre... |
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Capricorn, 10th Star Sign, December 22 - January 19
Capricorn is the tenth astrological sign in the zodiac, originating from the constellation of Capricornus. It spans the 270–300th degree of the zodiac, corresponding to celestial longitude. Under the tropical zodiac, the sun transits this area from D... |
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Aquarius, 11th Star Sign, January 20 - February 18
Aquarius is the eleventh astrological sign in the Zodiac, originating from the constellation Aquarius.
Under the tropical zodiac, the sun is in Aquarius typically between January 21 and February 20, while under the Sidereal Zodiac, the sun is in A... |
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Pisces, 12th Star Sign, February 19 - March 20
Pisces is the twelfth astrological sign in the Zodiac, originating from the Pisces constellation. It spans the 330° to 360° of the zodiac, between 332.75° and 360° of celestial longitude. Under the tropical zodiac the sun transits this area on averag... |
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Ptolemy, Astronomer / Mathematician
Claudius Ptolemy was a Greco-Egyptian writer of Alexandria, known as a mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in the city of Alexandria in the Roman province of Egypt, wrote in... |
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Aryabhata, Inventor of the Digit Zero
Aryabhata is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna).
Aryabhata gave the... |
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Copernicus, Earth moves around the Sun
Nicolaus Copernicus was a Renaissance- and Reformation-era mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at the center of the universe, likely independently of Aristarchus of Samos, who... |
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