The Department of Humanities and Social Sciences at IIST encompasses the disciplines of Economics, English, Management, and Sociology, and plays a distinctive role in advancing the Institute's vision of holistic science and technology education. The Department of Humanities and Social Sciences at IIST places strong emphasis on enhancing students' communication and management skills, recognizing their critical importance in both academic and professional contexts.

The Department of Earth and Space Sciences is dedicated to advancing knowledge in the fields of astrophysics, geology, planetary geosciences, atmospheric sciences, remote sensing, and geoinformatics. The department integrates theoretical, observational, and computational approaches to research in these domains. The department offers robust academic programs at undergraduate, postgraduate, and doctoral levels, fostering a vibrant learning environment that prepares students for careers in academia and industry, including the space start-up sector.