A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. Black holes form when massive stars run out of fuel and collapse in on themselves. At their core lies a singularity, a point of infinite density and zero volume. Surrounding the singularity is the event horizon, a boundary beyond which nothing can return. Black holes cannot be observed directly, but their presence is detected through their effects on the surrounding environment, such as bending light or pulling in nearby matter. "Each beauty of the 365 Collection has a unique value"