The concepts of atoms, molecules and substances can be traced back to the Vedic age. Moreover, the concepts of astronomy, metaphysics and spirituality are described in the Rig Veda, the ancient Hindu scriptures of the Vedic period. Advances in science and technology are the main reason for the growth of human civilization. India has been contributing in the field of science and technology since ancient times. The Rig-Veda is the oldest known Vedic Sanskrit text on Earth.