Why is fluid pressure zero in zero gravity?

I don't really understand fluid pressure. From what I've read:

1. Pressure is caused due to the weight of the fluid column
2. But it acts in all directions equally at a given point because of the random movement of water particles

So why is pressure only dependant on gravity when it is also caused by the random movement of particles?

Also, even if you consider a water column, aren't particles entering and exiting the water column randomly? That means that no force is holding any particle or group of particles together or suspending them. So what really is pressure and how is it acting?

In zero gravity don't the particles still have random movement? Also since the acceleration due to gravity is downwards shouldn't any forces/pressures also be downwards?

Also I'm just a student so if possible please refrain from complicated terms. I'd like to get an intuitive understanding of fluid pressure in general. There are similar questions on the site but I'm not able to understand any of them.

• Nov 1, 2022 at 13:55