The Themis programme is a European Space Agency programme, that is taking the first steps towards a European government-funded in-flight demonstration of a prototype reusable rocket first stage. The prototype rocket will also be called Themis, with flights slated to begin as early as 2023.
Themis is expected to provide valuable information on the economic value of reusability for the European government space program and develop technologies for potential use on future European launch vehicles.[non-primary source needed]
Two possible landing sites have been mentioned in discussions surrounding the project:
The estimated program timeline, as of December 2020, is as follows: