According to our current understanding of black holes based on general relativity, once an object crosses the event horizon of a black hole, it is not possible to gather any information from it or retrieve it in any way. This concept is often referred to as the "no-hair theorem."
The no-hair theorem states that black holes are characterized by only three fundamental properties: mass, electric charge, and angular momentum (spin). Any additional information about the object that fell into the black hole, such as its composition or specific details, is believed to be lost. The gravitational pull of a black hole is incredibly strong, leading to the formation of an event horizon, which is a boundary beyond which nothing, not even light, can escape.
Once an object crosses the event horizon and enters the black hole, its information becomes inaccessible to observers outside the black hole. The intense gravitational forces within a black hole are thought to crush matter to a singularity—a point of infinite density—where our current laws of physics break down. At this point, it is not clear what happens to the information carried by the object, and it remains a topic of active research and debate in the field of theoretical physics.
This concept is related to the long-standing problem known as the "information paradox" or "black hole information paradox," which explores the fate of information that enters a black hole. Various proposed solutions and theories, such as the holographic principle and the idea of Hawking radiation, are being explored to better understand this fundamental question in physics.