Mindjammer RPG Traveller Edition - Rules of Play says:
The Ennie Award-winning transhuman science-fiction RPG setting returns, in a brand new edition for use with the TRAVELLER roleplaying game!
This brand new 384-page hardback book includes:
• full rules for starships, organisations, and culture operations;
• detailed character cultures, genotypes, and new careers—play a sentient starship!
• new and innovative systems for describing planets, star systems, and alien life;
• deep setting material on the New Commonality of Humankind;
• rules for the Mindscape and virtual worlds;
• starmaps and planet descriptions, histories and background.