Hello anyone who can answer. I have a question concerning dark energy (Please realize that my knowledge is limited on this subject) It is known that the universe is expanding at an accelerating rate, scientists say this is due to the mysterious dark energy. It seems to go against our understanding of gravity, shouldn't the universe be expanding at a decelerating rate? What if at a certain amount of density (say black holes!) of matter space time is stretched (we know it can be warped, we think there can be waves, so why can't it be stretched?) This might explain why the universe is accelerating, its just space getting bigger. It might also explain why its only expanding on a large scale (in addition to the other forces, such as electromagnetism, that are greater than it at a small scale). It might just be the relationship between black holes. Maybe dark energy is just a strange aspect of general relativity. Instead the warping of space-time, it is the stretching of space time due to large, possibly infinite, amounts of density.