We know that dark matter as well as normal matter exists however does not make up 100% of matter around us, what could

Question: We know that dark matter as well as normal matter exists however does not make up 100% of matter around us, what could be the missing matter that completes the whole of matter out there?
- Keywords:
  100%,
  dark matter,
  space
Asked by aminas97 to Emma, Jimmy, Janet, Niall, Simon on 13 Mar 2013.
- Niall Crawford answered on 13 Mar 2013:
  
  Scientists have named the other bit as dark energy, and it is thought to make up 74% of all the mass and energy in the universe.
- James Holloway answered on 13 Mar 2013:
  
  I agree!

Question: We know that dark matter as well as normal matter exists however does not make up 100% of matter around us, what could be the missing matter that completes the whole of matter out there?