Extension de mission jusqu'en 2021.
https://earth.esa.int/web/guest/missions/esa-eo-missions/swarm/operational-news/-/article/esa-member-states-approve-swarm-extension
https://earth.esa.int/web/guest/missions/esa-eo-missions/swarm/operational-news/-/article/esa-member-states-approve-swarm-extension