The Science of Deep Space Navigation

i thought we should talk maybe a bit about the science of a deep space navigationdand how that would apply to the spacing guild. i was looking at another essay in that book, the science of doone we mentioned in the last episode. This one is called the spacing guild, and it's by a guy named john c. Smith who worked in space flight navigation at nassa j p l,. And his bio says that he worked on missions to venus, mars and earth, and that he was ar of the casina hoygens, a mission to t saturn and its moon, titan. I wonder it might mean return missions, like a attempt probe is coming