Vetted by NeuralPress's Multi-Agent Verifier for strict factual validity and event relevance. Our compliance engine cross-checks and filters search results to ensure zero false correlations or misleading content.
Primary Sources
Could dark matter be made of black holes from a different universe?
A simulation of the ‘cosmic web’, the vast network of threads and filaments that extends throughout the Universe. Dark matter density is represented by the blue-purple colours on the left. Gas density is represented by the orange-red colours on the right. Credit: ESA New research suggests that relic black holes from before the big bang may still shape galaxies today. These black holes could explain dark matter, one of the biggest unsolved questions in cosmology. Generally speaking, black holes are regions of spacetime where matter is compressed into a tiny space. Dark matter, meanwhile, is matter that does not reflect or absorb light. We know it exists because of its gravitational influence on galaxies and other cosmic structures. It can be viewed as the "glue" that holds galaxies together, but we do not know what it is made of at a fundamental level. Most physicists think dark matter is composed of an as-yet-undiscovered sub-atomic particle. But ancient black holes from before the big bang also fit the bill. They are dark, but also carry mass—exactly the properties required. I have explored this idea in a new paper. Of course, the idea of relic black holes also requires a rethink of the big bang itself. A simulation of the ‘cosmic web’, the vast network of threads and filaments that extends throughout the Universe. Dark matter density is represented by the blue-purple colours on the left. Gas density is represented by the orange-red colours on the right. Credit: ESA For nearly a century, cosmologists traced the history of the universe back to this single, dramatic moment. But maybe this wasn't the absolute beginning of time. Perhaps there was a universe before the big bang. Under this scenario, the universe collapsed before undergoing an expansion. The big bang represents the transition between the two phases. The big bang model has been remarkably successful. It explains the cosmic microwave background—the afterglow of the early universe—and predicts the large scale distribution of galaxies with astonishing accuracy. But in Einstein's theory of general relativity, it is also a singularity—a point where density becomes infinite and the known laws of physics break down. Many physicists interpret this not as a physical reality, but as a sign that something is missing. Singularities are less like physical objects and more like mathematical warnings: they tell us that our current theories cannot describe the earliest moments of the universe. A bounce, no...
Could dark matter be made of black holes from a different universe?
New research suggests that relic black holes from before the big bang may still shape galaxies today. These black holes could explain dark matter, one of the biggest unsolved questions in cosmology. Generally speaking, black holes are regions of spacetime where matter is compressed into a tiny space. Dark matter, meanwhile, is matter that does not reflect or absorb light. We know it exists because of its gravitational influence on galaxies and other cosmic structures. It can be viewed as the “glue” that holds galaxies together, but we do not know what it is made of at a fundamental level. Most physicists think dark matter is composed of an as-yet-undiscovered sub-atomic particle. But ancient black holes from before the big bang also fit the bill. They are dark, but also carry mass – exactly the properties required. I have explored this idea in a new paper. Of course, the idea of relic black holes also requires a re-think of the big bang itself. For nearly a century, cosmologists traced the history of the universe back to this single, dramatic moment. But maybe this wasn’t the absolute beginning of time. Perhaps there was a universe before the big bang. Under this scenario, the universe collapsed before undergoing an expansion. The big bang represents the transition between the two phases. The big bang model has been remarkably successful. It explains the cosmic microwave background – the afterglow of the early universe – and predicts the large scale distribution of galaxies with astonishing accuracy. But in Einstein’s theory of general relativity, it is also a singularity – a point where density becomes infinite and the known laws of physics break down. Many physicists interpret this not as a physical reality, but as a sign that something is missing. Singularities are less like physical objects and more like mathematical warnings: they tell us that our current theories cannot describe the earliest moments of the universe. A bounce, not a bang One alternative is a bouncing cosmology. In this picture, the universe undergoes a phase of contraction before the big bang, reaching an extremely high – but finite – density. Instead of collapsing into a singularity, it rebounds, beginning a new expanding phase. Bouncing models have been explored for decades, often requiring modifications to gravity or exotic new ingredients. But our work shows that a bounce can arise as a regular solution within standard physics, when gravity and the effects of quantum m...
Dark Matter Could Be Ancient Black Holes from a Prior Universe ...
A groundbreaking theory suggests that dark matter, the elusive substance constituting about 27% of the universe's mass, might be even stranger than previously imagined. According to a scientist, it could be made of ancient black holes originating from a different universe, rather than undiscovered particles. Rethinking Dark Matter's Composition Astronomers have long believed that dark matter ...
What if Darkish Matter Is Really Black Holes From One other Universe ...
New analysis means that relic black holes from earlier than the Big Bang should form galaxies at present. These black holes may clarify dark matter, one of many greatest unsolved questions in cosmology. Typically talking, black holes are areas of spacetime the place matter is compressed right into a tiny house.
