system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What would happen if we sent a satellite into a black hole?
gpt
The gravity of a black whole is so strong that past a certain point (called the event horizon) nothing, not even information or light, can escape it's pull. If we shot a satellite into a black hole, once it passed over the event horizon we wouldn't not be able to gather any information from it. 

However, there are theories about what it would be like to descend into a black hole. As you fell towards the event horizon, the black hole would expand in your field of vision until if covered half of your field of vision. Photons orbit a black hole near the event horizon, so it is theoretically possible that you would be able to look parallel to the horizon and see the back of your head. 

To someone watching you fall, you would approach the event horizon, and then slow down, until you seemed to stop just at the event horizon. This is due to the fact that the gravity of a black hole is so great that time is slowed in its vicinity. The frozen image of you that they see is the last light that you reflected before you crossed the event horizon. This image will redshift overtime, until it becomes impossible to distinguish.

After you crossed the event horizon, things would be fairly calm, at least to start. The black space around you would continue to expand to fill your entire field of vision. You would continue to fall as you approach the center of the black hole, called the singularity. 

As you came closer to the center, the force of gravity would become so strong that it would pull your feet with much more force than your head, causing your body to stretch. This process is called spaghettification. This continues until gravity even pulls your body, and then individual atoms apart. 

Then, aren't entirely sure. The singularity of a black hole is theorized to be a one-dimensional point with infinite gravity. At this point, the rules of General Relativity no longer apply, and the laws of physics begin to break down. We don't have a way to describe what happens because we have never observed it and mathematics is unable to describe what happens here.