Black Holes And The Birth Of Universes

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In 1915, Albert Einstein developed his theory of general relativity, having earlier shown that gravity does influence light's motion. Only a few months later, Karl Schwarzschild found a solution to the Einstein field equations, which describes the gravitational field of a point mass and a spherical mass. A few months after Schwarzschild, Johannes Droste, a student of Hendrik Lorentz, independently gave the same solution for the point mass and wrote more extensively about its properties. This solution had a peculiar behaviour at what is now called the Schwarzschild radius, where it became singular, meaning that some of the terms in the Einstein equations became infinite. The nature of this surface was not quite understood at the time. In 1924, Arthur Eddington showed that the singularity disappeared after a change of coordinates (see Eddington–Finkelstein coordinates), although it took until 1933 for Georges Lemaître to realize that this meant the singularity at the Schwarzschild radius was a non-physical coordinate singularity. Arthur Eddington did however comment on the possibility of a star with mass compressed to the Schwarzschild radius in a 1926 book, noting that Einstein's theory allows us to rule out overly large densities for visible stars like Betelgeuse because "a star of 250 million km radius could not possibly have so high a density as the sun. Firstly, the force of gravitation would be so great that light would be unable to escape from it, the rays falling back to the star like a stone to the earth. Secondly, the red shift of the spectral lines would be so great that the spectrum would be shifted out of existence. Thirdly, the mass would produce so much curvature of the space-time metric that space would close up around the star, leaving us outside (i. e. , nowhere). "


The black hole at the birth of the Universe
The black hole at the birth of the Universe
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Birth of a Black Hole | Other Shows | Discovery
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Birth of massive black holes in the early universe revealed
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Astronomers See Evidence of Supermassive Black Holes ...
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Birth of massive black holes in the early universe revealed
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The Birth of a Black Hole (Hypernovas, Gamma-Ray burst etc ...
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Black Hole discovery: Black hole birth REVEALED in new ...
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Cosmic Journeys: Birth of a Black Hole - The Documentary ...
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Are we in a BLACK HOLE? Astonishing claims entities could ...
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Scientists may have found a ‘ghost’ black hole from ...
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M82: The Birth of a Supermassive Black Hole | Black holes ...
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Have we really just seen the birth of a black hole?
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The Density of a Black Hole - How The Universe Works - YouTube
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Mysteries of the birth of the Universe | Earth Chronicles News
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A New Kind of Cosmic Flash May Reveal the Birth of a Black ...
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NOVA - Official Website | Birth of a Black Hole
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The Black Hole at the Birth of the Universe - Inside The ...
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Astronomers see collapsing star become black hole - UPI.com
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The birth , the baby universe ..The dark age....the ...
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Black Holes Explained – From Birth to Death - YouTube
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New Research Solves Key Mystery in the Birth of Massive ...
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The Birth of Binary Black Holes | California Academy of ...

Of Universes