Could anyone please explain to me how can an accelerated expansion take place in a homogenous & isotropic universe?I really can't figure that out - at all. Not only cannot happen radial, but not even linear. Unless I'm terribly wrong - and there's where you'll probably come in.If you even take the time for an (simple !) illustration, I would thank you even more.By the way, not only I cannot figure out dark energy, but I cannot imagine expansion even before DE - how could even a constant expansion, or a deccelerating one, could take place in a homogenous & isotropic three-dimensional universe? As soon as I think of several points in space and try to imagine what would happen (the observations should be the same, but they can't be!), well... I'm really waiting for your input.Thank you so much for your kindness.