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[9]: 75 The concept would subsequently be further popularized through its use in the Star Wars franchise. [11] In the 1974 film Dark Star, special effects designer Dan O'Bannon created a visual effect to depict going into hyperspace wherein the stars in space appear to move rapidly toward the camera. This is considered to be the first depiction ...
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 .
A black hole is a region of spacetime where gravity is so strong that nothing, not even light, can escape it. [2] Albert Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. [3] [4] The boundary of no escape is called the event horizon.
The radiation emitted by a dark star depends on its composition and structure; Hawking radiation, by the no-hair theorem, is generally thought of as depending only on the black hole's mass, charge, and angular momentum, although the black hole information paradox makes this controversial. Light-bending effects
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 ...
A hypothetical alternative to black holes. Q0957+561: Planck star: A star where the energy density is around the Planck density. The star will start to expand as soon as its density reaches the Planck constant. To the black hole, it expands instantly, but to the outside world, it takes eons to expand even the slightest. none: Population III star
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 properties of the normal star allow astronomers to infer the properties of its dark companion, a black hole. The first black hole to be confirmed was Cygnus X-1 , the brightest X-ray source in ...