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- What Is a Black Hole? - National GeographicWhat Is a Black Hole? 1 / 5 Perseus Black Hole A view of the central region of the Perseus galaxy cluster, one of the most massive objects in the universe, shows the effects that a relatively...
- Black Holes - NASA ScienceThe idea of an object in space so massive and dense that light could not escape it has been around for centuries. Most famously, black holes were predicted by Einstein's theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense remnant core.
- What Are Black Holes? - NASAA black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
- Anatomy | Black Holes – NASA Universe ExplorationAnatomy of a Black Hole. From stellar-mass black holes with a few times our Sun’s mass to supermassive monsters weighing up to billions more, black holes' makeup is essentially identical. As weird as black holes seem, they possess only three properties: mass, spin, and electrical charge.
- Black hole | Definition, Formation, Types, Pictures, & FactsBlack hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. It can be formed by the death of a massive star wherein its core gravitationally collapses inward upon itself, compressing to a point of zero volume and infinite density called the singularity.
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