Warning: Stay Away From Black Holes.
The problem, according to some astrophysicists’ calculations, is gravity. While we’re in free fall into a black hole we are subjected to the same gravitational process that causes tides.
Our body —and anything that falls towards the event horizon— is horizontally compressed and vertically stretched. For this reason Hawking, in his A Brief History of Time, called this process Spaghettification.
So, as a way to “kick the bucket”, it can be pretty mind-blowing, pun intended, and if the black hole is big enough (≈1000 solar mass), they also think that we can survive a few seconds past the event horizon.
But I leave the British astronomer Ian Morison explain in more detail this theory.
In July 2012, the astrophysicist Joseph Polchinski and his research team produced a new theory (with the same outcome, unfortunately). According to Polchinski, in fact, the calculations that support the theory of spaghettification are incorrect. Whereas he suggested that, getting closer to the event horizon, we should meet a wall of fire: the more we immerse ourselves, the more we approach a “seething vortex of particles”. The study, published in the journal Nature, has caused a sort of earthquake because, in the event that it’s proved correct, it would undermine two pillars of astrophysics: the principle of relativity and quantum mechanics.
However, this latest news may make things a bit more complicated for Polchinski.
Asked by super-autism-man