ok so from what i understood of these articles :
Dark Energy : energy in space, constantly changes from matter to energy ( a bit like matter and anti-matter clashing to form energy, and latter this energy reforms matter) .
And that this matter has negative mass, which to me would mean negative energy !! ??
Which would repell ordinary matter away, making the universe expand. IF this it true, would it mean that this Dark energy is more in the middle than in the surface ? because if it was in the surface , it would make all the universes objects come together ?