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- Black hole - Wikipedia
The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light Matter falling toward a black hole can form an accretion disk of infalling plasma, heated by friction and emitting light
- 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
What is a black hole? A black hole is a cosmic body of extremely intense gravity from which even light cannot escape Black holes usually cannot be observed directly, but they can be “observed” by the effects of their enormous gravitational fields on nearby matter
- 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 Hole – Definition, Formation, Types, and Mysteries
Explore what a black hole is, how one forms, their types, structure, history, and the latest discoveries about these cosmic enigmas
- Impossible black hole collision pushed relativity to its breaking . . .
In 2023, scientists detected the gravitational waves from a black hole collision that seemed impossible New research finally explains how this "forbidden" black hole came to be, and what it can
- Black Holes - Harvard–Smithsonian Center for Astrophysics
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”
- Understanding Black Holes
To understand a black hole is to stand at the edge of physics, to look into a place where time ends and mystery begins No one has ever seen a black hole with their eyes They cannot be touched or photographed directly
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