As a cosmologist, Prof. Cooray's research attempts to understand how the Universe turned out to be the way it is from a primordial soup of particles just after the big bang to galaxies, stars, and planets we see today. He is actively participating in several NASA and European Space Agency missions to study the early universe with cosmic microwave background radiation, to search for first stars and galaxies with rocket-borne infrared cameras, and working out challenges and techniques to detect relic gravitational waves from the big bang present today. Prof. Cooray's current research is primarily funded by NASA and NSF. His website (see URL above) has details of his current research activities, his group, publications, among others.