Cosmic Harmony is a project that explores the boundary between the visual arts and physical sciences. The project celebrates 2009 as the International Year of Astronomy (IYA09), a joint initiative of UNESCO and the International Astronomical Union. Its principle components are two simultaneous exhibitions by the Paris based artist Milica Zivadinovic to be held in Belgrade, Serbia in September 2009. "Time of Tetraktys" and "Vision of the Universe" find inspiration in the breathtaking views of the Cosmos uncovered by modern science, as well as in the exploring of our relation, as sentient beings, to that wider reality. The art offers a visualization of the science and the process of discovery that is directly accessible to a wider audience. Cosmic Harmony is realized in coordination with the Scientific Computing Laboratory of the Institute of Physics in Belgrade. The project is funded by a popularization of science grant from the Ministry of Science and Technological Development of the Republic of Serbia. The organizers of the Cosmic Harmony project are indebted to the Society of Astronomers of Serbia the national node for IYA09, Gallery DOB (Dom Omladine Beograd) and the Atrium Gallery (Belgrade City Library).