Chapter-3 India in Science and Space: From Ancient Discoveries to Modern Missions

Science and innovation have been part of India’s story for thousands of years. From ancient mathematical breakthroughs to modern space exploration, India has made remarkable contributions that have shaped global knowledge and technology. 

In recent decades, India has emerged as a major space power, achieving milestones once considered possible only for advanced economies. At the same time, the country continues to build on a rich scientific heritage that began centuries ago. 

This chapter explores India’s journey in science and space—from the discovery of zero and early surgical techniques to record-breaking satellite launches and historic missions to the Moon and Mars. 

3.1 Ancient Scientific Contributions 

The Discovery of Zero and the Decimal System 

One of India’s greatest contributions to the world is the formal mathematical treatment of zero as a number. Indian mathematician Brahmagupta provided the first written rules for arithmetic operations involving zero in the 7th century. 

India also developed the decimal place value system, which later spread to the rest of the world and became the foundation of modern mathematics and computing.  

Did You Know? 

Modern computers and digital technology rely on binary and decimal systems that originated from early Indian mathematical ideas. 

Early Advances in Surgery and Medicine 

Ancient Indian surgeon Sushruta described surgical procedures such as cataract surgery and plastic surgery techniques over 2,000 years ago. His medical text, the Sushruta Samhita, is considered one of the earliest works on surgery. 

These early medical advancements influenced modern surgical practices. 

Early Atomic Theory and Scientific Thought 

The philosopher Kanada proposed an early theory of atoms and matter centuries before modern atomic theory developed in Europe. These ideas show the deep scientific curiosity present in ancient India.