Need it for Shell scripting: UNIX

1. I have a text file astronauts.txt. I need to extract the second word of each line from this text file, astronauts.txt. and save it in a new file called members.txt. How can I do this using a (i) for loop and (ii) command cut?
2. I have created a directory that has 5 files.

Name of the Directory: Space

Name of File 1 : Astronautone

Name of File 2: Astronauttwo

Name of File 3: Astronautthree

Name of File 4: Astronautfour

Name of File 5: Astronautfive

I want to create a new file named Astronautsummary which will be having the 10th line of each file saved in the directory Space using for loop.