Asghar Qadir obtained his PhD under the supervision of Sir Roger Penrose and has pioneered work in spacetime symmetries. He is the author of a textbook on Special Relativity and has edited 14 books and seven special issues of journals. In addition, his publications include around 200 research journal articles in relativity, astrophysics and cosmology. His work particularly focuses on the rotation of galactic halos and defining the energy content of gravitational waves.