Gravity Is Not Like the Other Forces

I know this is tangential, but as lay person regarding physics I am stuck on the following thought experiment regarding gravity: We know about gravitational potential energy. We harness it all the time with dams and whatnot. Generally speaking, when we lift matter high above, we get some of the used energy back when it falls back down. But when we talk about sending say, a spaceship into space, it may fall on a different planet, with a different gravity…

I think this article is missing the biggest thing that makes gravity different: it arises from and affects everything with energy, which includes everything that we know exists. See this graph of the known standard model interactions: https://upload.wikimedia.org/wikipedia/commons/4/4c/Elementa... Gravity isn’t shown because every type of particle in that graph interacts with every other type of particle via gravity (i.e., the stress-energy tensor). A lot of people may not realize that a perfectly mirrored box…