Luv this story. Instead of bashing humanity, like so many ignorant writers like to do this story showcases the good in humanity! 💙👍 I've had enough of the pushing of hate and division.
I always hope that authors will consider that there won’t be a breathable atmosphere without a lot of organic matter or vegetation or an ocean. Unless the author has another process to explain it the stories often don’t pass the suspension of disbelief threshold. Check out how Andre Norton (Mary Alice Norton) handled it in early Sci Fi of the fifties and Sixties. Just a thought.