Eighteenth century on wards, human perceptions were developed enormously and have achieved so many thinhs in the field of science and technology. It is a turning point to the human race to send satellites to other plants of the solar system. even now, the modern science is developing furtherly.He had authored books on science in tamil. and it is notable that fenelon is travellimg with his mobile telescope centre to wards villages of tamilnadu and popularizing astronomy among rural students. - publisher.