Open Science is a phenomenon that can be traced back to the Middle Ages. In the end of the 20th century and the beginning of the 21st century, Open Science is strongly growing due to the worldwide internet and related new technologies, tools and communication channels. Two core objectives (reliability and trust) and three main characteristics (transparency, openness and reproducibility) of Open Science can be identified but it is still too early for a broad definition of this growing movement. Its growth is happening in many disciplines and in diverse facets. This article presents an overview how Open Science is introduced and established in all three science dimensions of research design, processes and publications. For the future, the ben...