what is lean meat

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A black hole is theoretically defined as a region of spacetime from which light cannot escape, making it appear black. This fundamental definition stems from the immense gravitational pull a black hole exerts, which is so strong that even light cannot escape it. The gravitational pull is proportional to the mass of the object, and can reach a point where the escape velocity (the speed needed to break free from the gravitational pull) equals the speed of light. This phenomenon can only occur if a sufficient amount of mass is compressed into a sufficiently small space 1.

For further detail, a black hole can also be envisioned as what remains after a star collapses upon itself. When a star exhausts its nuclear fuel, gravity overcomes the outward pressure from nuclear reactions, leading to the star collapsing. The resulting object is extremely dense, with such a strong gravitational pull that it forms a region in spacetime where the escape velocity exceeds the speed of light, preventing even light from escaping 2.