ضيوف الحلقة
Hakeem Muata OluseyiSelf - Astrophysicist/AuthorEEdward T. O'DonnellSelf - Historian
Don WildmanSelf - TV Host/HistorianAAustin RogersSelf - Jeopardy! Champion
Hakeem Muata OluseyiSelf - Astrophysicist/Author
Don WildmanSelf - TV Host/Historian