The Sagan was one of the first fusion-propelled prototype space vehicles. It was commissioned by the UN Solar Trust in 2032, built by McDonnell-Douglas engineering, and launched from the L3 station in 2041.
The Sagan flew a regular shuttle route between Luna, Mars and Titan. After a service of almost 75 years it was decomissioned. It was then transferred on Deimos, as part of the Spacefarer's Museum complex.