I read this book about 10 years ago. It's about a guy that travels to space to build the first space station (the first of the habitat colonies). An accident happens and his head is cut off but preserved by its exposure to space. Decades later he is brought back to life with a robot body, finds out his son (think his name was Jack) died in his 50's and his daughter is now old with grandchildren and the guy goes to visit her and when she is told who he is she regresses to a child like state(since this was the last time she saw her father) and she says the line "Jack daddy is home" mistaking her grandson or maybe great grandson for her brother and they proceed to have dinner with a person playing a role as her family from when she was a child(because she's mentally fragile i think or it could be because she was old). The only other thing I remember is something about the sun going to go out.
Anyone know what the name of the book is?