It is not unusual in Science Fiction for a disembodied human to be on spaceship.
Either the brain is removed from the body; kept alive artificially and often connected to the ship directly. Alternately the humans brain is transferred into computer, there is no organic component.
The first, a disembodied brain is at least theoretically possible with today's science. Ethical consideration make implementing/testing unlikely currently.
Sending one or a couple disembodied astronauts on a space mission would drastically lower the resource requirements. Less nutrition, less supporting infrastructure, etc.
Ethical considerations aside, from an physical, physics and organic perspective, what would/could the the mission parameters of a mission to an outer planet?
Or less broadly, considered a manned mission to the our Moon, as compared to a disembodied mission to Saturn's moon Titan. Given the decrease in required resources, could the same monetary budget ($), complete both missions?