Is everything in space made out of matter?

Question: Is everything in space made out of matter?
- Keywords:
  matter
Asked by hatishan to Isaac, Silvia, Will on 18 Nov 2016.
- Silvia Pardo answered on 18 Nov 2016:
  
  No, actually only 30% of the universe is made of matter, the rest is what we call dark energy. Dark energy is a property of space and makes the universe expand in all directions, like a balloon.