Data Science addresses these open research gaps. It complements the domain expertise of scientists by computer science expertise and proposes an “alternative research process focusing on extensive exploitation of available data”. With our computer science research we focus on the open challenges in scientific data handling: We study new computer science concepts in advanced data management, data analytics, and data exploration. We develop new scientific processes ranging from data integration up to data analysis and data exploration. Our research results are computer science methods that allow for efficient and scalable data processing in big and heterogeneous data repositories, (semi-)automated knowledge discovery in complex databases, and intuitive data exploration by interactive data visualization. In all these research fields we focus on the inclusion of the scientists’ domain expertise into our data science methods. This allows scientists to steer this data analysis process to novel data-driven hypothesis and a comprehensive understanding of their data. Thus, data science is a novel computer science research direction with significant impact on a variety of scientific domains such as geoscience.