If you have a waterfall in there, right out there at the horizon; you look at the waterfall and you go, "Oh, the water is falling really slowly." And you go, "My god it's really far away and it's a giant waterfall." If a waterfall is falling faster, it's a smaller waterfall which is closer by — because the speed of falling water is pretty constant everywhere.
Si tuvieras una cascada ahí dentro, precisamente ahí, en el horizonte, y miras a la cascada seguro dirías: "Oh, el agua está cayendo muy lentamente". y dirías: "Dios mío, realmente está muy lejos, es una cascada gigante".