https://www.nasa.gov/audience/forstudents/postsecondary/features/F_Astronaut_Requirements.html

https://www.pbs.org/spacestation/station/training_2.htm#:~:text=Astronaut%20Candidate%20Training&text=They%20attend%20classes%20on%20shuttle,processing%20are%20among%20the%20subjects.

https://www.ranker.com/list/what-is-astronaut-training-like/eric-vega

https://science.howstuffworks.com/astronaut4.htm

https://www.britannica.com/explore/space/astronaut-training/

https://www.nasa.gov/audience/forstudents/5-8/features/F_Astronauts_in_Training.html