For the first time in Sri Lanka and the world history there will be an online conference on May,2019 which is organized by the cooperation of SEDS Sri Lanka and SEDS USA as “Event Horizon Telescope and Black Holes” . This online discussion is conducted by Amaya Rajapaksha (Secretary of SED SL) and Nishadi de Zoysa (Secretary of SEDS UOM) with the representation of distinguish professors from university of Arizona. The concept is rendered by A.Nadkrani(University of Arizona) and Amila Sadun Basnayaka(Chair of SEDS SL) under the guidence of G.Vishwaroopan(Chair of SEDS USA) and M. Kainu(SEDS UNT Founder) and was hoping that all who are interested in astronomy and space science will join with them.