Airbus Defence and Space, a subsidiary of the aerospace corporation Airbus Group that builds the Ariane 5 launchers for ESA and Arianespace, has presented the project of the Adeline (ADvanced Expendable Launcher with INnovative engine Economy) system to reuse part of rockets’ first stage. It also presented plans to build space tugs to be placed in orbit, where they’ll deliver newly launched satellites into their required orbit.