Professor David Block is an astronomer and sought-after speaker on matters relating to astronomy as well as the Science/Faith dichotomy. He has devoted over 40 years to encouraging audiences around the globe always to “Look Up!” He speaks from the heart, sharing in-depth lessons from his world of research. Professor Block was elected a Fellow of the Royal Astronomical Society of London at the age of 19. His first research paper, on relativistic astrophysics, was published when he was 20 years old, in London, by the Royal Astronomical Society. He has been a visiting research astronomer at the Australian National University (ANU), the European Southern Observatory in Germany, the California Institute of Technology, the Institute for Astronomy in Hawaii, and Harvard University, amongst others. Professor Block has published over 100 astronomy peer reviewed journal articles and his research has twice been featured on the cover of the journal Nature.

Until the end of 2019, David Block served as a professor in the School of Computer Science and Applied Mathematics at the University of the Witwatersrand, Johannesburg, South Africa. He is now an Emeritus Professor.