Can anything escape a black hole?

Almost nothing! If we think about humans or objects large enough to be seen by the naked eye, the answer is definitely not! Nothing can escape once the event horizon is crossed. Even more so, nothing down to the size of an atom can escape the event horizon, as the gigantic gravity pull of the black hole would rip it apart.
There is however something able to escape a black hole and it’s called the Hawking Radiation (theorized by Stephen Hawking in 1970) through a process called quantum tunneling. 

Basically, once in a while, a subatomic particle manages to escape the event horizon exiting the black hole. This is a very special and rare event that happens during a quantum fluctuation, when a particle-antiparticle suddenly appears out of the vacuum of the universe and immediately annihilate each other. If a quantum fluctuation occurs near the event horizon, one of the particles will briefly escape the black hole and immediately get spaghettified towards the center of the singularity point.
There are some other theories to what may happen to matter as it crosses through “the other side” of a black hole. Follow http://www.astropeeps.com as there are several articles on the subject! – Roman Alexander

(The question was originally asked by Kazuto Kirigaya from Japan)