Which celestial body was Vincent scheduled to go to?

Vincent was scheduled to go to Titan, which is a moon of Saturn. In the context of the film "GATTACA," Titan represents the pinnacle of space exploration and the possibility of human colonization beyond Earth. The choice of Titan as a destination underscores the themes of genetic identity and aspiration within the story, as Vincent, who was conceived naturally and not genetically engineered, dreams of transcending societal limitations and making a significant impact by venturing to a place seen as a new frontier for humanity. This destination reflects both the ambition of human exploration and Vincent's desire to prove his worth in a society that prioritizes genetic perfection.

In contrast, the other options do not align with Vincent's aspirations or the thematic elements depicted in the film. Earth is his starting point and is where societal norms and prejudices are evident. Jupiter and Mars, while significant celestial bodies, do not have the same narrative significance as Titan within the story's exploration of Vincent's struggles and dreams.