Ken Mattingly References Ken Mattingly American astronaut Ask Anything Homework Help Also known as: Thomas K. Mattingly 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: How Many People Have Been to the Moon?/ Apollo 16Thomas K. Mattingly, who was originally intended to fly on Apollo 13 but had been removed because of exposure to measles, manned the Command Module and became the 22nd person to reach the Moon. Read MoreThomas K. Mattingly, who was originally intended to fly on Apollo 13 but had been removed because of exposure to measles, manned the Command Module and became the 22nd person to reach the Moon. Read MoreJack Swigert…days before launch he replaced Thomas K. Mattingly, who had been exposed to measles (though he never became ill). Read More…days before launch he replaced Thomas K. Mattingly, who had been exposed to measles (though he never became ill). Read More