Black Holes Explained : If you remember, in 2014, there was a blockbuster film by Director Christopher Nolan, Interstellar. In this film, space-related concepts, such as wormholes, black holes, alien planets, were depicted in a scientifically accurate way. But perhaps the most shocking scene, was at the end of the film. When in the climax, the main character of the film Cooper falls into a Black Hole. In the film, the name of the black hole was Gargantua. Cooper falls into the black hole with his spacecraft.
Initially, everything was black all around him, Complete darkness. But as he falls deeper, He notices some grain-like particles. These particles hit his spacecraft and cause scratches on it. There were some flashes of light, some sparks, and his spacecraft catches fire. He was forced to eject from his spacecraft and he kept falling into the black hole. And suddenly, he found himself in a five-dimensional space. A five-dimensional tesseract. It was a mind-boggling experience. A place where he could communicate with his past self, by using gravity.
Seeing these scenes, you might have wondered, if it is actually possible. Does this exist in a black hole? If we fall into a black hole, what will we see?