Dr. Shilpi Dewangan has been working as Associate Professor in the department of Mathematics Shri shankaracharya engineering college Bhilai. She completed her Ph.D. degree in Applied Mathematics in the year 2009 from Pt.Ravi Shankar Shukla University Raipur India.she published many research papers in national and international journals. About the Monograph: The satellites launched in outer space are used to relay telephone messages and radio and television signals. Some artificial satellites carry instruments that gather and send back information about the Earth and its surroundings. This information is of immense value to weather forecasters, scientists, military planners and farmers and fisher men. Satellites provide detailed images of every square meter of the Earth’s surface for study to ecologists. As there is no air in outer space and therefore no air resistance, satellites do not have to be sleek and streamlined, like rockets. Hence their shapes are designed depending on the jobs they have to accomplish.