Latest news with #Gaztanaga
Mint
19 hours ago
- Science
- Mint
Are we inside a black hole? New study challenges the Big Bang theory: ‘We are not special'
A new study by UK scientists has questioned the famous Big Bang theory. It suggests the universe may not have started from a single explosion. The research, published in Physical Review D by scientists from the University of Portsmouth, puts forward a bold new idea. It says our universe exists inside a black hole. The team believes the universe was born from a huge gravitational collapse that formed a black hole. This theory, called the 'Black Hole Universe', goes against the older idea that the universe came from a point of infinite density. Instead, the new theory says the matter inside the black hole got extremely compressed. Then, it bounced outward like a spring. This bounce is believed to have led to the universe we see today. The idea suggests that the universe was not created from nothing. But, it is part of a continuous cycle of collapse and rebirth. The study challenges long-held views of cosmic beginnings. According to Professor Enrique Gaztanaga, when matter collapses due to gravity, it doesn't always end in a point of infinite density. Instead, it can become very dense and then bounce back, creating a new, expanding universe. According to the theory, our universe's edge is the black hole's event horizon. It is a boundary that blocks us from seeing what lies beyond. Unlike the Big Bang theory, this model combines general relativity and quantum physics. Quantum laws say matter cannot be compressed forever. "We are not special. We are not witnessing the birth of everything from nothing, but rather the continuation of a cosmic cycle - one shaped by gravity, quantum mechanics, and the deep interconnections between them," GB News quoted Prof Gaztanaga as saying. New images from the James Webb Space Telescope show more early galaxies spinning one way than the other. This odd pattern suggests the universe may have been born spinning. This is believed to be a sign it could have formed inside a black hole. Experts say this idea, called black hole cosmology, might also explain the mystery of dark matter and supermassive black holes. The Big Bang Theory says that our whole universe began from one tiny point nearly 14 billion years ago. Then, like a sudden explosion, this tiny point burst and started expanding in all directions. At that time, there were no people, Earth, or sky: just energy and tiny particles flying around. Slowly, over lakhs and crores of years, stars, galaxies and planets like our Earth began to form.
The Journal
2 days ago
- Science
- The Journal
The universe may not have originated with the Big Bang, new study reveals
THE UNIVERSE MAY not have started with the Big Bang, but instead 'bounced' out of a massive black hole formed within a larger 'parent' universe, according to a new scientific paper. Professor Enrique Gaztanaga, from the University of Portsmouth's Institute of Cosmology and Gravitation, said that the current Big Bang theory was problematic as the laws of physics 'broke down' when used to explain it. His new explanation, published in the journal Physical Review D, suggests that the Universe was formed as a result of a gravitational collapse in a larger universe which generated a massive black hole leading to a rebound or 'bounce' causing our universe to emerge. Professor Gaztanaga said: 'The Big Bang model begins with a point of infinite density where the laws of physics break down. 'This is a deep theoretical problem that suggests the beginning of the Universe is not fully understood. 'We've questioned that model and tackled questions from a different angle – by looking inward instead of outward. 'Instead of starting with an expanding universe and asking how it began, we considered what happens when an over-density of matter collapses under gravity.' Advertisement Prof Gaztanaga explained that the theory developed by his team of researchers worked within the principles of quantum mechanics and the model could be tested scientifically. He said: 'We've shown that gravitational collapse does not have to end in a singularity and found that a collapsing cloud of matter can reach a high-density state and then bounce, rebounding outward into a new expanding phase. 'Crucially, this bounce occurs entirely within the framework of general relativity, combined with the basic principles of quantum mechanics. What emerges on the other side of the bounce is a universe remarkably like our own. 'Even more surprisingly, the rebound naturally produces a phase of accelerated expansion driven not by a hypothetical field but by the physics of the bounce itself. 'We now have a fully worked-out solution that shows the bounce is not only possible – it's inevitable under the right conditions. 'One of the strengths of this model is that it makes predictions that can be thoroughly tested. And what's more, this new model has also revealed that the Universe is slightly curved, like the surface of the Earth.' He added: 'Furthermore, it could also shed new light on other deep mysteries in our understanding of the early universe, such as the origin of supermassive black holes, the nature of dark matter, or the formation and evolution of galaxies.' Professor Gaztanaga, who is the science co-ordinator for the ARRAKIHS ESA space mission, said that the four wide-angle telescopes on the satellite could help confirm the theory through its ability to detect ultra-low surface brightness structures in the outskirts of galaxies, which he explained were essential for studying how galaxies grow and evolve.
North Wales Chronicle
2 days ago
- Science
- North Wales Chronicle
Universe was not formed in big bang but ‘bounced' out of black hole
Professor Enrique Gaztanaga, from the University of Portsmouth's Institute of Cosmology and Gravitation, said that the current Big Bang theory was problematic as the laws of physics 'broke down' when used to explain it. His new explanation, published in the journal Physical Review D, suggests that the Universe was formed as a result of a gravitational collapse in a larger universe which generated a massive black hole leading to a rebound or 'bounce' causing our universe to emerge. Professor Gaztanaga said: 'The Big Bang model begins with a point of infinite density where the laws of physics break down. 'This is a deep theoretical problem that suggests the beginning of the Universe is not fully understood. 'We've questioned that model and tackled questions from a different angle – by looking inward instead of outward. 'Instead of starting with an expanding universe and asking how it began, we considered what happens when an over-density of matter collapses under gravity.' Prof Gaztanaga explained that the theory developed by his team of researchers worked within the principles of quantum mechanics and the model could be tested scientifically. He said: 'We've shown that gravitational collapse does not have to end in a singularity and found that a collapsing cloud of matter can reach a high-density state and then bounce, rebounding outward into a new expanding phase. 'Crucially, this bounce occurs entirely within the framework of general relativity, combined with the basic principles of quantum mechanics. What emerges on the other side of the bounce is a universe remarkably like our own. 'Even more surprisingly, the rebound naturally produces a phase of accelerated expansion driven not by a hypothetical field but by the physics of the bounce itself. 'We now have a fully worked-out solution that shows the bounce is not only possible – it's inevitable under the right conditions. 'One of the strengths of this model is that it makes predictions that can be thoroughly tested. And what's more this new model has also revealed that the Universe is slightly curved, like the surface of the Earth.' He added: 'Furthermore, it could also shed new light on other deep mysteries in our understanding of the early universe such as the origin of supermassive black holes, the nature of dark matter, or the formation and evolution of galaxies.' Prof Gaztanaga, who is the science co-ordinator for the ARRAKIHS ESA space mission, said that the four wide-angle telescopes on the satellite could help confirm the theory through its ability to detect ultra-low surface brightness structures in the outskirts of galaxies which he explained were essential for studying how galaxies grow and evolve.
Leader Live
2 days ago
- Science
- Leader Live
Universe was not formed in big bang but ‘bounced' out of black hole
Professor Enrique Gaztanaga, from the University of Portsmouth's Institute of Cosmology and Gravitation, said that the current Big Bang theory was problematic as the laws of physics 'broke down' when used to explain it. His new explanation, published in the journal Physical Review D, suggests that the Universe was formed as a result of a gravitational collapse in a larger universe which generated a massive black hole leading to a rebound or 'bounce' causing our universe to emerge. Professor Gaztanaga said: 'The Big Bang model begins with a point of infinite density where the laws of physics break down. 'This is a deep theoretical problem that suggests the beginning of the Universe is not fully understood. 'We've questioned that model and tackled questions from a different angle – by looking inward instead of outward. 'Instead of starting with an expanding universe and asking how it began, we considered what happens when an over-density of matter collapses under gravity.' Prof Gaztanaga explained that the theory developed by his team of researchers worked within the principles of quantum mechanics and the model could be tested scientifically. He said: 'We've shown that gravitational collapse does not have to end in a singularity and found that a collapsing cloud of matter can reach a high-density state and then bounce, rebounding outward into a new expanding phase. 'Crucially, this bounce occurs entirely within the framework of general relativity, combined with the basic principles of quantum mechanics. What emerges on the other side of the bounce is a universe remarkably like our own. 'Even more surprisingly, the rebound naturally produces a phase of accelerated expansion driven not by a hypothetical field but by the physics of the bounce itself. 'We now have a fully worked-out solution that shows the bounce is not only possible – it's inevitable under the right conditions. 'One of the strengths of this model is that it makes predictions that can be thoroughly tested. And what's more this new model has also revealed that the Universe is slightly curved, like the surface of the Earth.' He added: 'Furthermore, it could also shed new light on other deep mysteries in our understanding of the early universe such as the origin of supermassive black holes, the nature of dark matter, or the formation and evolution of galaxies.' Prof Gaztanaga, who is the science co-ordinator for the ARRAKIHS ESA space mission, said that the four wide-angle telescopes on the satellite could help confirm the theory through its ability to detect ultra-low surface brightness structures in the outskirts of galaxies which he explained were essential for studying how galaxies grow and evolve.
The Herald Scotland
2 days ago
- Science
- The Herald Scotland
Universe was not formed in big bang but ‘bounced' out of black hole
His new explanation, published in the journal Physical Review D, suggests that the Universe was formed as a result of a gravitational collapse in a larger universe which generated a massive black hole leading to a rebound or 'bounce' causing our universe to emerge. Professor Gaztanaga said: 'The Big Bang model begins with a point of infinite density where the laws of physics break down. 'This is a deep theoretical problem that suggests the beginning of the Universe is not fully understood. 'We've questioned that model and tackled questions from a different angle – by looking inward instead of outward. 'Instead of starting with an expanding universe and asking how it began, we considered what happens when an over-density of matter collapses under gravity.' Prof Gaztanaga explained that the theory developed by his team of researchers worked within the principles of quantum mechanics and the model could be tested scientifically. He said: 'We've shown that gravitational collapse does not have to end in a singularity and found that a collapsing cloud of matter can reach a high-density state and then bounce, rebounding outward into a new expanding phase. 'Crucially, this bounce occurs entirely within the framework of general relativity, combined with the basic principles of quantum mechanics. What emerges on the other side of the bounce is a universe remarkably like our own. 'Even more surprisingly, the rebound naturally produces a phase of accelerated expansion driven not by a hypothetical field but by the physics of the bounce itself. 'We now have a fully worked-out solution that shows the bounce is not only possible – it's inevitable under the right conditions. 'One of the strengths of this model is that it makes predictions that can be thoroughly tested. And what's more this new model has also revealed that the Universe is slightly curved, like the surface of the Earth.' He added: 'Furthermore, it could also shed new light on other deep mysteries in our understanding of the early universe such as the origin of supermassive black holes, the nature of dark matter, or the formation and evolution of galaxies.' Prof Gaztanaga, who is the science co-ordinator for the ARRAKIHS ESA space mission, said that the four wide-angle telescopes on the satellite could help confirm the theory through its ability to detect ultra-low surface brightness structures in the outskirts of galaxies which he explained were essential for studying how galaxies grow and evolve.
