ARIES is a center of excellence for research in Astronomy & Astrophysics and Atmospheric Sciences. It carries out research on air pollution and climate change on earth, formation and evolution of sun, stars and galaxies. The research group of institute consists of research scientists, PhD students, postdocs and visiting scholars. The researchers are also involved in design and development of sophisticated and advanced scientific instruments and it is supported by a team of engineers and technical personnel who are involved in building and operating instruments at both the campuses - Manora Peak and Devasthal.