Prof. Saleh Muhammad Allahdin - India

The Author is a retired Professor of Astronomy currently serving as President Sadr Anjuman (Executive Committee) Ahmadiyya Qadian, India. He received his PhD in Astronomy and Astrophysics from the University of Chicago in 1963. He was a faculty member of the Department of Astronomy, Osmania University, Hyderabad, India from 1964 to 1991.