What one question about space do you want to know the most?

Question: What one question about space do you want to know the most?
- Keywords:
  know,
  space
Asked by Luke Skywalker to Col Op, Elie, Floris, Jenn, RocketRich on 4 Mar 2016.
- Richard Moss answered on 4 Mar 2016:
  
  Are we alone?
  We are natural explorers, and it is always rewarding to discover new life species.
- Elie Allouis answered on 5 Mar 2016:
  
  …is there anybody out there ?

Question: What one question about space do you want to know the most?