Barren sign Barren sign In astrology, a barren sign is a sign of the Zodiac that, according to ancient astrological tradition, is not likely to possess strong powers of procreation, i.e. they are "barren". The signs most associated with infertility are Gemini, Leo, and Virgo. In addition, Aries, Sagittarius, and Aquarius are also believed to quite often have problems in matters of reproduction and are therefore considered "semi-barren". William Lilly (1647) in CHAPTER CXVIII of his book "Christian Astrology" described the signs as follows: Aries: By reason Mars, a sterill planet hath that for his house, and the Sun for Exaltation, is
Zodiac tropical zodiac used in Western astronomy and astrology, this means that the tropical "sign" of Aries currently lies somewhere within the "constellation" Pisces ("Age of Pisces"). The sidereal coordinate system takes into account the ayanamsa, "ayan" meaning "transit" or "movement", and "amsa" meaning "small part", i.e. movement of equinoxes in small parts. It is unclear when Indians became aware of the precession of the equinoxes, but Bhaskar II's 12th-century treatise "Siddhanta Shiromani" gives equations for measurement of precession of equinoxes, and says his equations are based on some lost equations of "Suryasiddhanta" plus the equation of Munjaala. The discovery of