CENTRA is part of StronGrHEP, the H2020 Marie-Curie action Research and Innovation Staff Exchange (RISE), 2016-2020, awarded by the European Union. The network is composed of five european nodes (Aveiro, Cambridge, Lisbon, Paris and Rome) and three extra-european nodes (Mississippi, Osaka and Perimeter Institute). The action kick-off metting happened at the IAP in Paris on May 12, when the PIs of the five european nodes (Barausse, Cardoso, Gualtieri, Herdeiro and Sperhake) discussed and planned the action's details. The following photo shows the PIs and a statue of Le Verrier, the scientist who predicted the existence and position of Neptune.