The launch of the first Sentinel-1 satellite marks a new paradigm in Earth observation focusing on operational missions to support users for decades to come. This first satellite for Europe’s environmental monitoring Copernicus programme carries an advanced radar to image Earth’s surface no matter what the weather or if it is day or night. Olaf Trieschmann from the European Maritime Safety Agency talks about the need for radar satellites and how data from Sentinel-1 will be used to monitor oil spills and for maritime surveillance. ESA’s Josef Aschbacher talks about how the wide range of services offered through Copernicus will make a step change in the way we manage the environment.