Milan M. Ćirković is a research professor at the Astronomical Observatory of Belgrade, (Serbia). He obtained his PhD at the Dept. of Physics, State University of New York in Stony Brook in 2000 with the thesis in astrophysical cosmology. His primary research interests are in the fields of astrobiology (habitable zones, habitability of galaxies, SETI studies), philosophy of science (futures studies, philosophy of cosmology), and risk analysis (global catastrophes, observation selection effects, epistemology of risk). He co-edited the widely-cited anthology on Global Catastrophic Risks (Oxford University Press, 2008, with Nick Bostrom), wrote three research monographs (the latest being The Great Silence: The Science and Philosophy of Fermi’s Paradox, Oxford University Press, 2018), as well as four popular science/general nonfiction books, and authored about 200 research and professional papers.