Christina Hammock Koch was selected as an astronaut by NASA in 2013. She completed astronaut candidate training in July 2015. Koch graduated from North Carolina State University with a Bachelor of Science in Electrical Engineering and Physics and a Master of Science in Electrical Engineering. Koch most recently served as flight engineer on the International Space Station for Expedition 59, 60 and 61. Koch set a record for the longest single spaceflight by a woman with a total of 328 days in space.