Das allgegenwärtige Schwerefeld   The GOCE (Gravity field and steady-state Ocean Circulation Explorer) mission will measure high-accuracy gravity gradients and provide a global model of the Earth's gravity field and of the geoid. The geoid (the surface of equal gravitational potential of a hypothetical ocean at rest) serves as the classical reference for all topographical features. The accuracy of its determination is important for surveying and geodesy, and in studies of Earth interior processes, ocean circulation, ice motion and sea-level change. Blick in das Erdinnere     GOCE will significantly advance our understanding of the physics and dynamics of Earth's interior such as volcanism. Its detailed mapping along with seismic data is expected to shed new light on the processes that cause earthquakes and volcanic activity, and potentially lead to an improvement in the prediction of such events. Einblicke in die Dynamik der Weltozeane     For around 20 months, GOCE will gather data to map Earth’s gravity field with unprecedented accuracy and spatial resolution. The final gravity map and model of the geoid will provide users worldwide with well-defined data products that will be instrumental in advancing science and applications in a broad range of disciplines.