Black Hole

A black hole is a region of spacetime where gravity is so strong that nothing – no particles or even electromagnetic radiation such as light – can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of no escape is called the event horizon. Although it has a great effect on the fate and circumstances of an object crossing it, it has no locally detectable features according to general relativity. In many ways, a black hole acts like an ideal black body, as it reflects no light. Moreover, quantum field theory in curved spacetime 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 of the order of billionths of a kelvin for stellar black holes, making it essentially impossible to observe directly.

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Remarkable space blast identified as black hole collision

Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say - From a rough calculation, the flash appeared to give off more light than 1,000 trillion suns

Supermassive black hole devours a star,blasts it remains towards Earth

A Black Hole Consumed a Star and Released the Light of a Trillion Suns

Astronomers Detect Very Luminous Jet from Star-Eating Supermassive Black Hole

Supermassive Black Hole Violently Rips Star Apart, Launches Relativistic Jet Toward Earth

We saw a black hole rip apart a star 8.5 billion light-years away

Astronomers Watch In Awe As A Giant Black Hole Tears Apart A Star 12.4 Billion Light-Years Away

A Supermassive Black Hole Shot a Jet at the Speed of Light Towards Earth

Rare sighting of luminous jet spewed by supermassive black hole

Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say

Super-distant black hole is eating half a sun a year and blasting its leftovers at Earth

Star ripped up by black hole is one of the brightest things ever seen

Astronomers See a Star's Final Scream Into a Black Hole Halfway Across The Universe

Mysterious Astronomical Signal Is Black Hole Jet Pointing Straight Toward Earth

Lab-grown black hole may prove Stephen Hawking's most challenging theory right

NASA Scientists Use Discover Supercomputer To Create Black Hole Jets

The hunt is on in neighboring galaxy for 2nd closest monster black hole to Earth

NASA scientists create black hole jets with supercomputer

The Second-Closest Supermassive Black Hole Might be in a Nearby Dwarf Galaxy