Search Results for: black holes
Researchers in South Africa used the Giant Metrewave Radio Telescope (GMRT) in India to discover something strange in the distant universe, so bizarre that is not explained by the current cosmological models and theories.
One of the most vexing questions in physics is what would really happen if you fell into a black hole? Now, a new radical theory, proposed by famous cosmologist Stephen Hawking, may finally solve this challenging puzzle.
Astronomers have spotted five monster black holes previously hidden by dust and gas in space and they suggests that there might be millions more of them lurking around our universe.
Using the Hubble Space Telescope, astronomers have investigated the relationship between monster black holes that power radio-signal-emitting galactic jets and galaxies that have undergone mergers.
As two galaxies enter the last stages of merging they become locked in a gravitational orbit around each other, as a result, astronomers believe that the galaxies’ supermassive black holes at their center would inevitably collide and merge to become one.
For years, scientists have believed that black holes are a portal to no-return. Astronauts in movies fear the mouths of black holes because the nothingness extends into an unknown forever. Black holes have been known as Bermuda Triangles of space – what goes in is lost forever. Or so we thought.
Dark matter and black holes are some of the most mysterious things in the Universe, so a connection between the two is absolutely thrilling. In a new study of elliptical galaxies led by Dr Akos Bogdan of the Harvard-Smithsonian Center for Astrophysics has revealed a surprising link between galaxies’ dark matter halos and their central black holes.
It may be another case of life imitating art, but the visual effects technology used for last fall’s Christopher Nolan sci-fi epic ‘Interstellar,’ may lead the way to further understanding of how real life black holes actually function – particularly the extreme power they wield, giving traction to new methods in astrophysics research.
A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return.
The central regions of many glittering galaxies, our own Milky Way included, harbor cores of impenetrable darkness—black holes with masses equivalent to millions, or even billions, of suns. What is more, these supermassive black holes and their host galaxies appear to develop together, or “co-evolve.” Theory predicts that as galaxies collide and merge, growing ever more massive, so too do their dark hearts.
A black hole is a large amount of matter squeezed into a tiny area with an enormous gravitational pull for its size. Many black holes form from dying giant stars that collapse in on themselves. But even as black holes, they continue to orbit and exert the same gravitational pull on objects around them. Not all scientists believe in black holes. But for those who do, the surprises just keep coming.
Astronomers in the next year will be able to detect hundreds of black holes thanks to the brand new detectors of the Laser Interferometer Gravitational-Wave Observatory or LIGO, which is a new research by scientists from Cardiff University.