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- Black hole - Wikipedia
A black hole is a massive, compact astronomical object so dense that its gravity prevents anything from escaping, even light Albert Einstein's theory of general relativity predicts that a sufficiently compact mass will form a black hole [4] The boundary of no escape is called the event horizon
- What Are Black Holes? - NASA
A 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
- Black hole | Definition, Formation, Types, Pictures, Facts | Britannica
Black 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
- Black Hole Basics - Science@NASA
Astronomers tracked the orbits of several stars near the center of the Milky Way to prove it houses a supermassive black hole, a discovery that won the 2020 Nobel Prize When very massive objects accelerate through space, they create ripples in the fabric of space-time called gravitational waves
- Black holes — Everything you need to know | Space
Black holes are some of the strangest and most fascinating objects in the universe They're extremely dense, with gravitational forces so strong, that nothing, not even lights, can escape once
- Black Holes | Center for Astrophysics | Harvard Smithsonian
Black holes are some of the most fascinating and mind-bending objects in the cosmos The very thing that characterizes a black hole also makes it hard to study: its intense gravity All the mass in a black hole is concentrated in a tiny region, surrounded by a boundary called the “event horizon”
- Black holes: Facts about the darkest objects in the universe
Discover interesting facts about what black holes are, how they form and what would happen if you fell into one Black holes are places where gravity is so powerful that nothing — not even light —
- What would happen if you fell into a black hole? - BBC Earth
Put simply, if a black hole sucks things in, then a white hole spits them out again – wherever that may be – and the two are connected via an inter-dimensional tunnel, known as a wormhole Or, it’s also hypothesised, if you waited long enough, the black hole will turn into a white one, anyway
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