IPAC researchers report that Webb data show galaxy cluster XLSSC 122, 10.4 billion light-years away, holds an unusually dense concentration of matter. Caltech IPAC's summary says that suggests some cosmic structures may have developed much faster than current models predict.
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+25
- Incentives
- Insufficient
- Confidence45
LZ's September 1 report of one high-energy xenon recoil has drawn dozens of arXiv papers, with much of the interest on the higgsino. A confirmed higgsino would be supersymmetry's first discovery, though LZ says the event could still be a blip from known physics.
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+10
- Incentives
- Insufficient
- Confidence40
Luis Anchordoqui's Lehman College team calculates that primordial black holes in a universe with a micron-wide hidden dimension would end up five-dimensional. The work links a proposed dark matter candidate to an extra dimension that has no more evidence behind it.
Reality
- Evidence30
- Adoption
- Insufficient
- Hype gap+15
- Incentives
- Insufficient
- Confidence50
H.E.S.S. searched 546 hours of Milky Way centre data for a single-energy gamma-ray line from dark matter and found no significant signal. Its upper limits now reach the annihilation rates the collaboration says matter for WIMPs, a leading dark matter candidate.
Reality
- Evidence55
- Adoption
- Insufficient
- Hype gap+10
- Incentives35
- Confidence55
Cambridge-led researchers plan to fly the suitcase-sized CosmoCube around the Moon and collect about 1,000 hours of Earth-shielded radio data over two years. It will listen for hydrogen's 21-centimetre signal from the roughly 150 million years before the first stars, an era no one has directly observed.
Reality
- Evidence42
- Adoption
- Insufficient
- Hype gap+22
- Incentives60
- Confidence45
A University of Washington team ran roughly 15,000 streams through four clump-free Milky Way analogues for five billion years and got the gaps and kinks usually read as subhalo signals. The host galaxy is now a control.
Reality
- Evidence62
- Adoption
- Insufficient
- Hype gap+15
- Incentives30
- Confidence60
Primordial helium-4, measured with new precision in September 2026, makes Big Bang nucleosynthesis a competitive probe again, a physicist argues. Helium depends on how fast the young universe expanded, and so on how many hot, light particles it held.
Reality
- Evidence40
- Adoption
- Insufficient
- Hype gap
- Insufficient
- Incentives45
- Confidence45
Youngsub Yoon of Sejong University asked what dark halo an astronomer would infer in a universe with no dark matter. His answer, 170 solar masses per square parsec, falls inside the observed band of 90 to 220.
Reality
- Evidence46
- Adoption10
- Hype gap+28
- Incentives62
- Confidence55
A Copenhagen-led team reports in Nature a faint trail of tidally stripped stars inside the ultra-diffuse galaxy UGC9050-Dw1, where the mass it implies agrees with earlier estimates for the same galaxy.
Reality
- Evidence55
- Adoption
- Insufficient
- Hype gap+18
- Incentives55
- Confidence58
Physicists at HKU and Beijing Normal University derived lensing predictions straight from a three-dimensional wave simulation. On one well-studied quasar, the image positions came out closer to the data than the models they compared against.
Reality
- Evidence34
- Adoption
- Insufficient
- Hype gap+28
- Incentives62
- Confidence44
Aquarius IV is one of the faintest Milky Way satellites ever recorded, pulled out of Vera C. Rubin Observatory test data taken before the main survey began. The research note has not been peer reviewed.
Reality
- Evidence60
- Adoption22
- Hype gap+10
- Incentives45
- Confidence66
LZ's liquid xenon detector recorded a single burst of light on 1 September, with roughly a 1-in-200 chance it was background. Its energy alone is enough to make the simplest dark matter candidate a poor fit.
Reality
- Evidence42
- Adoption34
- Hype gap+12
- Incentives55
- Confidence52
Stefano Profumo ran twelve dark matter scenarios through the Barbieri-Giudice sensitivity test in Physical Review D. A popular particle model tied to a Higgs resonance came out among the most fine-tuned of the set.
Reality
- Evidence46
- Adoption
- Insufficient
- Hype gap+12
- Incentives60
- Confidence57
An INAF-led team searched the deepest optical images yet taken of the fields around NGC 5068, NGC 5084 and NGC 5087 by eye, logging 47 dwarf galaxy candidates that spectroscopy has still to confirm as satellites.
Reality
- Evidence66
- Adoption
- Insufficient
- Hype gap+22
- Incentives62
- Confidence57
A worldwide survey led from Waterloo and the Perimeter Institute records what working physicists believe about dark matter and quantum gravity, and the way its answer options were drawn shapes what those percentages can prove.
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+20
- Incentives60
- Confidence40
The Kyoto-led model says an axion signal should peak in Southeast Asia, but the decade of records came from Britain, and the several unexplained dark photon candidates it also turned up cannot be checked from one station.
Reality
- Evidence62
- Adoption
- Insufficient
- Hype gap+30
- Incentives68
- Confidence55
Each cloud holds about 3 million solar masses of hydrogen inside a halo of 3.7 billion, the gas fraction cold dark matter models predict for a halo that never made a star, and also what a tidal tail could imitate.
Reality
- Evidence62
- Adoption
- Insufficient
- Hype gap+10
- Incentives35
- Confidence55
A calculation of the race between accretion and Hawking radiation puts the smallest black hole that can grow inside a Galactic bulge white dwarf at about 40 metric tons, roughly 250,000 times below the no-feeding threshold.
Reality
- Evidence52
- Adoption
- Insufficient
- Hype gap+12
- Incentives62
- Confidence55
Astronomers modelled a ribbon of stripped stars around a faint dwarf galaxy to weigh its dark matter, the first time the trick has worked anywhere but the Milky Way.
Reality
- Evidence62
- Adoption15
- Hype gap+22
- Incentives66
- Confidence58