How do we select astronauts for space missions?

Being an astronaut is a dream job for many, but it takes more than just a desire to explore space to become one. The selection process is rigorous and competitive, and requires years of training and preparation.

In the United States, NASA is responsible for selecting astronauts for space missions. To be considered for the program, applicants must meet certain criteria. They must have a bachelor's degree in engineering, biological science, physical science, or mathematics, and at least three years of related professional experience. In addition, they must pass a physical exam and meet certain height and weight requirements.

Once an applicant is selected for the astronaut program, they undergo extensive training that can take up to two years to complete. This includes learning how to operate spacecraft and equipment, practicing spacewalking, and training in survival skills.

Selection for specific space missions is based on a number of factors, including the astronaut's skills and experience, as well as the goals of the mission. Crews for space missions are typically made up of a mix of experienced and rookie astronauts.