Question about Frank
I have a degree in history, and have done my share of research. In the end, there are always a ton of unanswered questions, many lost to time. I don't know British history all that well, but that was Frank's focus/specialty.
Space experts dream of traveling to the stars, just as historians dream of going back in time and living historic events. I find it a bit odd that Frank would never bring this up....the chance to go back in time and explore history, live through the chaotic time that was the American Revolution (though I understand it didn't have the same impact in England) and the following Napoleonic Wars.
Perhaps I missed it. But considering Claire wanted to go back, and he knew the relationship wouldn't work, why not go back together than part ways? Granted, it might be a one way trip for both.