What the Vedic sciences are, and how they connect

A family of disciplines, not a single subject

The phrase "Vedic sciences" is used loosely today. At the School of Vedic Sciences we use it for a specific family of classical disciplines that grew up around the four Vedas and were taught, argued over and refined in Sanskrit for well over two thousand years. Some are concerned with language, some with ritual, some with the body, some with buildings and some with the sky. What unites them is a shared vocabulary, a shared method of compact rules (sutras) with long commentaries, and a common origin in the need to preserve and correctly perform the Vedic tradition.

This article is a map. Each region it describes has its own page in Shunya, and each is linked from the knowledge map on our home page.

The Vedas

The four Vedas, the Rig, Yajur, Sama and Atharva, are collections of hymns, ritual formulae, chants and incantations, with prose layers (Brahmanas, Aranyakas and Upanishads) added over time. For our purposes their importance is that they had to be kept exact. A hymn recited with the wrong accent or at the wrong time was considered ineffective. That requirement created the first sciences.

The six Vedangas

The Vedāṅgas, literally "limbs of the Veda", are six auxiliary disciplines. A traditional verse compares them to the parts of a body: metre the feet, ritual the hands, astronomy the eyes, etymology the ears, phonetics the nose and grammar the mouth.

• Shiksha (phonetics) fixes how each sound is articulated, its pitch and its length.
• Chandas (metre) counts syllables and their weight. Pingala's Chandahsutra enumerates metres with a method close to binary counting, and it is one of the early places where the word Śūnya appears in a technical sense.
• Vyakarana (grammar) analyses words into roots and suffixes. Panini's Ashtadhyayi is its masterpiece.
• Nirukta (etymology) explains difficult Vedic words. Yaska's Nirukta survives.
• Kalpa (ritual procedure) sets out how rites are performed, including the geometry of fire altars in the Shulbasutras.
• Jyotisha (time-reckoning) determines when rites should be performed. The oldest surviving text, the Vedanga Jyotisha attributed to Lagadha, is a short manual for computing the Tithi, the lunar day, and the positions of Sun and Moon over a five-year cycle.

Two features of the Vedangas matter for everything that follows. First, they are technical: they produce rules that can be checked. Second, they are interdependent. Jyotisha needs mathematics; ritual needs Jyotisha to fix its moment, which is the root of Muhūrta; grammar and metre are needed to read every other text.

The Upavedas

The Upavedas are applied sciences traditionally attached to individual Vedas: Ayurveda (medicine), Dhanurveda (archery and the military arts), Gandharva Veda (music and performance) and Sthapatya Veda (architecture). Different sources give different lists, and some include Arthashastra (statecraft) instead of architecture. We present each as a historical and textual tradition. We do not offer medical or other personal guidance.

The darshanas

Alongside these sit the darshanas, the schools of philosophy. Six are usually counted as orthodox: Nyaya (logic), Vaisheshika (atomism and categories), Sankhya (analysis of matter and spirit), Yoga (discipline of attention), Mimamsa (interpretation of ritual texts) and Vedanta (inquiry into the Upanishads). They provided the theories of knowledge that the technical sciences relied on. The debate manuals inside the Charaka Samhita, for instance, borrow from Nyaya.

Where Jyotish sits

Jyotisha grew far beyond its Vedanga origins. By the time of Varahamihira in the sixth century CE it was described as having three branches (skandhas):

1. Siddhanta, mathematical astronomy: computing planetary positions, eclipses and time from long cycles. Its classics include the Surya Siddhanta, Aryabhata's Aryabhatiya (499 CE) and Bhaskara II's Siddhanta Shiromani (1150 CE).
2. Hora, horoscopy: reading the birth chart. Its classics include Varahamihira's Brihat Jataka and the Brihat Parashara Hora Shastra.
3. Samhita, collective and omen literature: weather, agriculture, architecture and public events, gathered in Varahamihira's Brihat Samhita.

The panchanga, the almanac, is where the three meet in daily life. Ganita, mathematics, developed largely inside Siddhanta; India's decimal place-value system and its written zero come from that milieu.

How historians read this map

The modern historian of science David Pingree spent decades cataloguing Sanskrit works in the exact sciences, and his surveys show how ideas moved between India, Mesopotamia, the Hellenistic world and the Islamic world. Indian horoscopy, for instance, absorbed Greek terminology in the early centuries CE, while Indian numerals and trigonometry later travelled west. K. V. Sarma's editions brought to light the Kerala school of astronomy and mathematics, and S. R. Sarma's work on instruments shows how this knowledge was practised with real devices. Reading the Vedic sciences historically does not diminish them. It shows them as a living, argumentative tradition that kept learning.

How Shunya is organised

Shunya follows the map. Articles are grouped in clusters such as Panchanga, Siddhanta, Jyotish (Hora), Ganita and Sanskrit. A glossary explains terms like tithi and nakshatra the first time they appear. A shelf of sixteen classical texts gives authors, dates (with uncertain dates marked†) and where to read them. Findings are short method notes from our research desk.

Try it

Open the Panchang tool to see today's five limbs of time, or the Kundli tool to see how the Hora branch arranges the sky at a moment of birth.

Taught in

The Hora branch is the subject of our Certificate Programme in Predictive Astrology, offered as FORE × Deepanshu Giri Ji. The programme has 60 hours of learning engagement: 30 hours of live teaching on weekends and 30 hours of self-paced research. The fee is ₹35,000 + applicable GST.

† Marked dates or readings are debated among scholars or still being confirmed by our faculty.