Outer Planet Flagship Mission
The Outer Planet Flagship Mission was a joint mission between NASA and ESA to send a probe to study the icy satellites of the outer Solar System. There were two primary candidate missions under study: Europa Jupiter System Mission (EJSM) and Titan Saturn System Mission (TSSM). On February 18, 2009 NASA announced that both missions can proceed forward, but the EJSM is to be the first, departing Earth in 2020 and arriving at Jupiter in 2026. The Titan mission is to be launched later.[1]
The Europa mission concept has since changed, with the Europa Clipper mission to be launched by NASA, with a target launch date of 2022, and a separate European mission Jupiter Icy Moon Explorer (JUICE) . The proposed Titan mission is not currently scheduled.