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How many people are involved in Principia?
what type of metal is a rocket made of?
How do you prepare the austronauts for the psychological challenges they may face in space?
Sending someone into space is a big project. How do you train your astronauts to go into space and is it hard.?Explain
In which direction does the earth spin? (1 comments)
What do you think the most accurate space film is? (1 comments)
Is the earth ever going to stop spinning? (1 comments)