Black holes are considered perfect black bodies that absorb all matter and energy that crosses their event horizon, making escape impossible. While this concept aligns with general relativity, there is no experimental proof that definitively confirms black holes absorb everything, as current physics lacks alternatives that would contradict existing observations. Theoretical discussions suggest that while black holes ideally absorb energy, the nature of energy radiation remains complex. The consensus is that once matter crosses the event horizon, it cannot return. Overall, black holes are understood to absorb everything that approaches them, consistent with the principles of general relativity.
