·Siddhanta (Astronomy): Astronomy & its application to astrology

·Samhita (Mundane astrology): Covers Mundane astrology, predicting important events related to countries such as war, earth quakes, political events, astro – meteorology, financial positions, electional astrology; house & construction
related matters (Vaastu Shaastra), animals, portents & omens etc.

· Hora (Predictive astrology):

This branch has the following different styles / sub branches:-

·Jaatak Shaastra / Hora Shaastra (Natal Astrology / horoscopy): Prediction based on individual horoscope.

·Muhurt or Muhurtha (Electional astrology): Selection of beneficial time to initiate an activity to get maximum fruitionfrom the life activities.

·Swar Shaastra (Phonetical astrology): Predictions based on name & sounds.

·Prashna (Horary astrology): Predictions based on time when a question is asked by querent / querist.

·Ankjyotisha / Kabala (Numerology): A branch of astrology based on numbers.

·Nadi Astrology: An ancient treatise having detailed predictions for individuals.

·Tajik Shaastra / Varsha Phal (Annual Horoscopy): Astrology based on annual solar  returns.

·Tajik Shaastra / Varsha Phal (Annual Horoscopy): Astrology based on annual solar returns.

·Jaimini Sutras: A non-conventional method of timing of events based on Famous Indian astrologer, Acharya Jaimini.

·Nastjaatakam (Lost Horoscopy): Art of tracing / construction of lost horoscopes.

·Streejaatak (female astrology): A special branch of astrology dealing with female nativities.

DIFFERENCE BETWEEEN VEDIC AND WESTERN ASTROLOGY

The most easily referred to difference between the two lies in the method of measurement of the Zodiac. Vedic astrology uses primarily the sidereal zodiac (in which stars are considered to be the fixed background against which the
motion of the planets is measured), whereas most Western astrology uses the tropical zodiac (the motion of the planets is measured against the position of the Sun on the Spring equinox). This difference becomes only noticeable over
time, after the course of several centuries, as a result of the precession of the equinoxes. Synchronically, the two systems are identical, with just a shift of the origin of the ecliptic longitude by about 22 degrees or days, resulting
on the placement of planets in the previous sign in Western charts about 80% of the time.

SCIENTIFIC BASIS OF VEDIC ASTROLOGY

Ancient Hindu literature is full of mythology related to zodiac signs, constellations (also known as Nakshatras) and planets, which explain a lot of astrological rules. However the popular opinion is that the mythology was just a method
that our ancient seers used to explain some very complex physical laws, which were beyond the comprehension of common people. Unfortunately even today’s modern science has not been able to fully understand those physical laws behind
this ancient method although it’s getting there very fast. Our current understanding of the science of astrology lies in statistics and probability. Statistics is the branch of mathematics, which can deal with correlation between
two or more seemingly independent events without knowing the cause of that correlation. If in a chart of 1000 people have the same astrological chart then it can be seen that certain astrological rules hold true in 70%-80% of them.
In statistical terms we may say that the occurrence of a specific event in one’s life when certain planetary combination exists is “statistically significant”. Let’s say that you flip a coin 1000 times then the probability of “heads”
is always near 50%. Now let’s say that you observe the results of flipping a coin during the sun set and sun rise. If you find, after an year long test, that probability of “heads ” coming up during sunrise is not actually 50%, as
expected, but its 70%, then you can actually construct a rule that if you flip a coin during sun rise, the chances of you getting a “heads” will always be more. Vedic astrology can be explained in a similar way. Certain combinations
in one’s chart actually result in a prediction, which turns out to be correct in 70-80% of the charts having that combination. We may not explain it yet as to why it happens but the evidence is pretty strong that events can be predicted
with very reasonable statistical significance.