Sometimes I think about what would happen if Grace ended up coming home to earth. If the taumoeba didn't leak from the xenonite breeders and Grace had no reason to go back and save Rocky.
Imagine how the world currently freezing and suffering from starvation would react to the suicide mission suddenly comeing back to earth. Did the Hail mary even have a way to land? It was designed to go out to space and send information back so maybe Grace has to use the little training Rocky gave him to try and land in the ocean and hope he survived especially with all the ice now forming on earth now. Would everyone assume the mission failed? That the hail mary never even made it out to Tau Ceti? Then come to find out only one person survived and it was the one guy who didnt even want to be there in the first place. Ryland Grace, the man who made first contact with alien life three times and would probably be emotionally attached to any of Rocky's xenonite puppets because that's all he had left of him now that Rocky was going back to his home Erid.
I imagine Stratt and him meeting up for the first time since she "betrayed" him and how awkward it would be especially because the other two died in the coma so he had no one except for Rocky and now he wouldn't even have that.
Would Grace go back to teaching? Would he leave the taumoeba to Stratt and try to rejoin the society that had put their faith in him without knowing it? How would Grace even react to being with humans again after YEARS alone? I imagine Grace meeting up with his students from before he had left, or at least whatever was left of them hoping they where part of the people who survived, and telling them all how much he missed them and all about Rocky, his best friend who helped save the stars.
Anyway I cried while writing this. I just love Rocky so much it hurt a bit thinking that he wouldn't have anyone to watch him sleep once again. Also think Grace might have attachment issues anytime he sees a rock that reminds him of Rocky and Stratt and his students would just have to nod along and hope this is normal.
Bonus pov of Rocky coming home to Erid and Adrien having to deal with the stories of a leaky space blob who helped save the stars. (They're right where they want to be as long as Rocky is there)