Mathematics is an instrument for all branches of science. According to history of science mathematics took birth in India with the decimal number system or invention of 0, ..., 9 numbers and astronomical observations of sky. Later it spread in Europe through Arab. After 12th century, Europe advanced in experimental sciences whereas India lagged behind in it due lot of foreign invasions and political disturbances. Mathematics is called the Queen of all branches of science. It is based on logic. Now-a-days, there are a lot of branches of mathematics and physics. Modern astronomy is based on many sophisticated instruments. Scholars throught the world contribute lacs of research papers in Mathematics every year.Similarly they do in physics & astronomy also. With my limited knowledge, I have a few contributions in mathematical physics & astronomical science also. Some of my papers were published in academic journals in India, USA & UK and others were published in the proceedings of science congresses, seminars & symposiums in India. I put them together in a book-form for scholars and readers in science. If they get interest in it, my endeavour will be successful. Hope it will be interesting to you all.