1. The problem statement, all variables and given/known data This is more of a conceptual question rather than a homework problem. This is my first post, so apologies if this is in the wrong section. Consider a jar full of liquid in microgravity. My book says: According to the formula p = ρgh, p→0 as g→0. Thus there is no pressure in the jar when it's in microgravity. My problem: Isn't it true, though, that the molecules in the liquid are jiggling around? Wouldn't these molecules still inadvertently bump into the sides of the jar, creating pressure? 2. Relevant equations p = ρgh 3. The attempt at a solution My current thought is that the pressure due to this bumping is negligible. So the formula p = ρgh is a (good) approximation.