Forgive me if I have posted this in the wrong location. I'm trying to reconcile my understanding of spacetime, but am running into a paradox that I'm sure is arising from my own misunderstandings. As you get closer to a black hole, time, with respect to outside observers, begins to slow to a stop. My understanding is that it is the extreme gravity that is warping space and time around the black hole, to the point that, as an example, a clock just outside the black hole would move slower than one sitting outside of it's influence. Now the second issue I am having is with the travelling twins idea. Unless I'm misunderstanding, the twin that remains on the planet, will experience time at a faster rate with respect to the travelling twin. So what causes the clock just outside the black hole to move slower, the clock on earth to move faster, and a clock in space to move at what I will consider "normal" pace? Edit: Updated references to focus on just outside the black hole.