Margaret Rhea Seddon References Margaret Rhea Seddon American astronaut and doctor Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Today in History—January 16/ “Thirty-Five New Guys”—Six of Whom Were WomenSullivan, doctor Anna Fisher, doctor Margaret Rhea Seddon, and biochemist Shannon Lucid. Read MoreSullivan, doctor Anna Fisher, doctor Margaret Rhea Seddon, and biochemist Shannon Lucid. Read More