Why is the Universe accelerating?

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Offline Diogo_Afonso_Leitao

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Why is the Universe accelerating?
« on: 11/10/2015 21:10:40 »
Hello again guys!
I know dark energy has a negative pressure (acting like reverse gravity), which causes the universe to expand. However, what causes it to accelerate? If dark energy isn't created with the expansion, why is it going faster and faster?? Is dark energy an actual property of space itself? So as space expands there is more dark energy?