Search results
Results From The WOW.Com Content Network
A stellar black hole (or stellar-mass black hole) is a black hole formed by the gravitational collapse of a star. [1] They have masses ranging from about 5 to several tens of solar masses . [ 2 ] They are the remnants of supernova explosions, which may be observed as a type of gamma ray burst .
The stellar remnant thus becomes a black hole. The mass at which this occurs is not known with certainty, but is currently estimated at between 2 and 3 M ☉ . Black holes are predicted by the theory of general relativity .
A quasi-star (also called black hole star) is a hypothetical type of extremely large and luminous star that may have existed early in the history of the Universe. They are thought to have existed for around 7–10 million years due to their immense mass .
Black holes are expected to form when a massive star dies. After the star’s nuclear fuel is exhausted, its core collapses to the densest state of matter imaginable, a hundred times denser than ...
The black hole, in a galaxy some 4 billion light-years from Earth, likely has a mass at least 100 million times that of Earth's Sun. Astronomers reached this theory using data from the Hubble and ...
Nevertheless, according to Penrose's cosmic censorship hypothesis, the singularity will be confined within the event horizon bounding the black hole, so the spacetime region outside will still have a well-behaved geometry, with strong but finite curvature, that is expected [9] to evolve towards a rather simple form describable by the historic ...
Astronomers recently spotted a black hole swallowing up a star like celestial spaghetti — and no, that's not science fiction. Star dies by "spaghettification" as it's consumed by black hole Skip ...
If a black hole is very small, the radiation effects are expected to become very strong. A black hole with the mass of a car would have a diameter of about 10 −24 m and take a nanosecond to evaporate, during which time it would briefly have a luminosity of more than 200 times that of the Sun. Lower-mass black holes are expected to evaporate ...