A Black Hole

A black hole is a region of space time exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.[ The theory of general relativity predicts that a sufficiently compact mass can deform space time to form a black hole. The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, no locally detectable features appear to be observed. In many ways a black hole acts like an ideal black body, as it reflects no light. Moreover, quantum field theory in curved space time predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.

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4 comments on A Black Hole

  • Oliver says:

    Hmm, interesting. There seem to be a great many strange features of black holes that don’t make sense, though you lost me a bit towards the end there. Do you have any theoretical idea what would happen if an object passed through a black hole? I’ve always wondered this myself.

    • raven says:

      i dont think much can pass through a black hole simply because gravity would smash anything into sub atomic particles, some people think they are wormholes, but if they are, where is their exit points, i think surly we would have detected something jetting massive amounts of mass and energy in to space

  • Josh Ellery says:

    cool website, your theme makes it look so mysterious and interesting. I’ve heard a lot about black holes and they seem pretty scary to me. Them things can swallow up entire existence like it is nothing. They almost seem like they defy science and I would love to see one in person. Great article

    • raven says:

      so would i love to see one, but on the other hand i also want to keep my distance, just in case it grabs on to us, simply because if your caught by one, the chance of getting away is next to zero

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