Timeline

May 2012: Mission selection

February 2013: Payload selection

November 2014: Mission adoption

July 2015: Prime industrial contractor selection

Mars 2016: Mission and System Requirements Review completed

March 2017: Spacecraft Preliminary Design Review completed

June 2017: Instrument Preliminary Design Reviews completed

December 2017: Ground Segment Requirements Review completed

December 2018: Ground Segment Design Review completed

March 2019: Spacecraft Critical Design Review completed

April 2019: Science Ground Segment Design Review completed

September 2019: Start of the assembly of the spacecraft flight model

November 2019: Instrument Critical Design Reviews completed

November 2022: Ground Segment Readiness review completed

18 January 2023: Qualification and acceptance review completed

9 February 2023: Spacecraft shipped to Kourou

22 February 2023: Science ground segment Readiness review completed

14 April 2023: Launch from CSG

July 2023: End of the Near Earth Commissioning /  start of the cruise phase