Hi all, A naive question: My understanding is that dark energy drives the expansion of space - that is, the distance between two points in space increases over time - with the important note that it is space itself that is expanding. However, when talking about gravity (where one says that matter warps spacetime), the usual description is that gravity causes masses to move towards one another through space. My question: if dark energy causes space itself to expand, shouldn't gravity have the opposite effect and cause space to contract, perhaps in addition to having masses move towards each other through space? I realize it would be more correct to talk about spacetime, but I'm wondering primarily about the spatial aspect. Thanks.