What Do You Wonder About Space?

   What Do I Wonder About Space?

1.  What happens if a rocket crashes onto earth? Do they have gigantic airbags like how they land Mars rovers?
2.  Do they have some type of alarm system to wake up the astronauts in case of emergency / when they are needed?
3.  Where do they build the rockets that they launch into space?
4.  When did the organization "NASA" start (The year, day and month)?
5.  Are there any other planets that are undiscovered?