2007, My father’s hands and black hole
A black hole is a region of space-time from which nothing, not even light, can escape. Around a black hole there is a mathematically defined surface called an event horizon that marks the point of no return. [1] When an object falls into a black hole, any information about the shape of the object or distribution of charge on it is evenly distributed along the horizon of the black hole, and is lost to outside observers. This behavior is so puzzling that it has been called the black hole information loss paradox. [2]

1. Preskill, J. (1994-10-21). "Black holes and information: A crisis in quantum physics"
2. Anderson, Warren G. (1996). "The Black Hole Information Loss Problem"