Distinguished Lecture in Honor of Frank Avignone’s 50 years at the University of South Carolina “Dark Matter in the Universe,” Feb, 2016
Schroedinger Lecture, University of Zurich “The Dark Side of the Universe,” Oct. 19, 2015
10th Pflueker Lecture, Bonn Cologne Graduate School of Physics and Astronomy, “The Dark Side of the Universe,” (Previous speakers include Gerard t’Hooft, Andrei Linde, Theodor H ̈ansch, Michael Berry and Serge Haroche). Bonn, Germany, Nov. 13, 2015
10th Barkla Lecture at the University of Liverpool, Nov. 5, 2015 “Dark Matter in the Universe” Previous Barkla lectures were presented by Frank Wilczek (2006), Martinus Veltman (2007), Francois Englert (2008), Gerard ’t Hooft (2009), Michael Green (2010), John Ellis (2012), Viatcheslav Mukhanov (2013), Jacob Bekenstein (2014).
Plenary Talk to 109 astronauts: “What do we Know about the Universe Today?” Inspired by Space Conference, Association of Space Explorers, XXVIII Planetary Congress Stockholm, Sweden Sept. 22, 2015
Invited lecturer at Carl Friedrich von Siemens Foundation “Nymphenburg Talks”, Nymphen- burg Palace, Munich, Germany, 2013