Physicists propose primordial black holes could reveal a hidden fifth "dark dimension"
Researchers at Lehman College say that, if a micron-sized "dark dimension" exists, primordial black holes from the early universe would be five-dimensional and could be long-lived. The idea is theoretical, and no such black hole has been observed.
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The story, neutrally told
Right · 2Physicists at Lehman College in the US have published a paper in the journal Physical Review D proposing that primordial black holes could provide evidence of a hidden fifth dimension, which they call a "dark dimension". GB NewsR “Physicists from Lehman College have put forward a remarkable theory suggesting primordial black holes from the early universe might provide evidence for a concealed fifth dimension” Read at GB News ↗ Daily MailR “In their new paper, published in the journal Physical Review D, researchers from Lehman College in the US” Read at Daily Mail ↗ Right · 2Primordial black holes are hypothetical objects thought to have formed in the first fractions of a second after the Big Bang, before any stars existed; none has been directly observed, but they are a candidate explanation for dark matter, which makes up about 27 per cent of the universe. Daily MailR “Scientists haven't actually observed a primordial black hole yet, but they are one of the candidates for 'Dark Matter', the mysterious substance that makes up 27 per cent of the universe.” Read at Daily Mail ↗ GB NewsR “Despite remaining undetected through direct observation, primordial black holes represent one potential explanation for dark matter” Read at GB News ↗ Right · 2The framework imagines our four-dimensional universe as a "brane" embedded in a five-dimensional "bulk", with the extra dimension about one micron across, roughly one-tenth the width of a red blood cell; both outlets note there is no direct evidence that such a dimension exists, though some theoretical work on electromagnetism and gravity is mathematically more consistent with an extra dimension. Daily MailR “There isn't direct evidence that we are in a 'dark dimension' universe, but lots of theoretical physics concerning electromagnetism and gravity work better if the mathematics has an extra dimension.” Read at Daily Mail ↗ GB NewsR “This extra dimension measures just one micron across within our four-dimensional framework” Read at GB News ↗
Right · 2The team examined two formation scenarios. If the black holes collapsed from over-dense regions of early-universe matter, they would start out behaving as four-dimensional objects but, being so small, would become unstable and turn five-dimensional; if they formed from collapsing loops of cosmic strings, they would be five-dimensional from the start. Daily MailR “However, because they would be so small, their four-dimensional configuration would soon become unstable, and they would collapse into a five-dimensional object.” Read at Daily Mail ↗ GB NewsR “According to the team's mathematical analysis, primordial black holes originating from cosmic strings would be five-dimensional from the start.” Read at GB News ↗ Right · 2The researchers conclude that, if a dark dimension exists, any primordial black holes would be five-dimensional, and such black holes would evaporate more slowly than four-dimensional ones; those formed from cosmic strings could last as long as the universe's 13.8 billion-year age, so some might still exist today. Daily MailR “According to their calculations, primordial black holes created by collapsing cosmic strings could have lifespans equivalent to the 13.8 billion-year age of the universe.” Read at Daily Mail ↗ GB NewsR “Crucially, black holes possessing five-dimensional properties would undergo evaporation at a markedly slower rate compared to their four-dimensional counterparts.” Read at GB News ↗ Right · 2They also suggest the model could explain the highly energetic "ghost particle" neutrino detected by the KM3NeT detector under the Mediterranean Sea in 2023, if a five-dimensional primordial black hole evaporated; the Daily Mail and GB News both say this goes well beyond what can currently be verified by observation. Daily MailR “However, that suggestion goes well beyond what is currently provable with direct observation.” Read at Daily Mail ↗ GB NewsR “However, the researchers acknowledge this particular interpretation extends considerably beyond what current observational capabilities can verify definitively.” Read at GB News ↗
Every sentence links to the reporting it rests on. The pill in front of each says where its sources sit: Left, Centre or Right when one side supplies at least half of them, Mixed when they are evenly split. The number is how many outlets it cites.
Left0 outlets
No left outlet in our sources has covered this story yet.
Centre0 outlets
No centre outlet in our sources has covered this story yet.
Right2 outlets
- Framing
- Both outlets present the paper as a sweeping, intriguing cosmic discovery, leading with the idea that black holes 'hold the key' to a hidden fifth dimension, while explaining it with accessible analogies and noting its speculative status.
- Emphasis
- The headline claim of a hidden fifth dimension, the flat-page analogy, the long lifespan of the black holes and the 2023 'ghost particle' link.
- Leaves out or plays down
- Neither outlet quotes the authors by name, includes independent physicists' views, or says how the prediction could be tested; the Daily Mail adds general background on black-hole formation.
- Charged language
- “FIFTH dimension”“hidden FIFTH dimension”“remarkable theory”“tantalising hint”“ghost particle”
- For example
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“Scientists say ancient black holes could hold the key to a hidden FIFTH dimension beyond our universe” — Daily Mail
“Black holes in space 'hold key to hidden FIFTH dimension', scientists believe” — GB News
“But it does offer a tantalising hint of what black holes might reveal about our universe” — Daily Mail
What every side reports
- Lehman College physicists published the work in Physical Review D.
- No primordial black hole or dark dimension has been directly observed.
- Five-dimensional primordial black holes would evaporate more slowly, with some possibly lasting 13.8 billion years.
- The link to the 2023 KM3NeT neutrino is speculative and beyond current verification.
Lehman College organisation
Its physicists argue that if a dark dimension exists, primordial black holes would be five-dimensional and long-lived, giving testable predictions; they acknowledge the neutrino explanation exceeds what can currently be verified.
“the research team emphasises this hypothesis yields testable predictions about observable phenomena.” — GB News
“the researchers acknowledge this particular interpretation extends considerably beyond what current observational capabilities can verify definitively.” — GB News
Primordial black holes topic
Presented as hypothetical relics of the early universe, undetected so far, and a possible dark matter candidate whose tiny size could make them sensitive to an extra dimension.
“Since these ultra-dense remnants, known as primordial black holes, are so small, their gravity could bleed through into the dark dimension.” — Daily Mail
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No coverage yet.
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Right2 articles
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Mixed Enthusiastic, explanatory science feature with a bold headline, analogies and background, but flags that the neutrino link is unprovable.
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GB NewsR ·
Black holes in space 'hold key to hidden FIFTH dimension', scientists believe
Mixed Condensed rewrite of the paper's claims with a 'remarkable theory' lede and quote-marked headline, while noting the researchers' caveat.
- 11 Oct 08:25 First Daily MailR Scientists say ancient black holes could hold the key to a hidden FIFTH dimension beyond our universe
- 11 Oct 10:52 +2h 28m GB NewsR Black holes in space 'hold key to hidden FIFTH dimension', scientists believe
Times are when each article was published, or when we first saw it if the outlet gave no time.