What is the largest moon? - Fast Computing Zone

Question: What is the largest moon?
- Keywords:
  planet,
  solar system,
  space
Asked by Harry to Miriam on 13 Nov 2018.
- Miriam Hogg answered on 13 Nov 2018:
  
  The largest moon in our solar system is Ganymede which is one of Jupiters moons, It’s larger than Mercury!
  
  (A body is given the classification of a moon if it orbits a planet)
  
  We don’t know if its the largest moon in the galaxy though because we can only just about find planets that are Earth sized so finding a moon is difficult.