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Listening to the sun reveals previously hidden changes to solar cycle

Phys · · 700 words · By University
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What to know about Listening to the sun reveals previously hidden changes to solar cycle

Researchers from the University of Birmingham and other institutions used helioseismology to analyze solar data over four cycles. They found that the sun's magnetic activity is becoming increasingly confined to shallower layers just below the surface, suggesting a long-term change in solar behavior.

Propaganda risk 0%
Claims checked 12
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Listening to the sun reveals previously hidden changes to solar cycle Sadie Harley Scientific Editor Robert Egan Associate Editor Internal changes due to the sun's "active biorhythm" have become increasingly "skin-deep" over the past four solar activity…

Why it matters

Publishing its findings in Monthly Notices of the Royal Astronomical Society, an international team led by the University of Birmingham reveals solar magnetic activity is being squeezed into an increasingly shallow layer just below the visible surface,…

Common ground

Solar activity rises and falls in 11‑year cycles, producing solar flares, and ejections of highly charged particles and coronal mass ejections that give rise to space weather.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the University of Birmingham and other institutions used helioseismology to analyze solar data over four cycles. They found that the sun's magnetic activity is becoming increasingly confined to shallower layers just below the surface, suggesting a long-term change in solar behavior.

open_in_new Read the original article: https://phys.org/news/2026-05-sun-reveals-previously-hidden-solar.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 12 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 6
verified Verified By Reference 3
schedule Pending 2
help Insufficient Evidence 1
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Claim 1: “Cycle 25 appears weaker in traditional surface indicators but comparably strong when seen in the high-frequency helioseismic data”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
schedule
Claim 2: “William J. Chaplin et al, Sub-surface structural changes associated with successive 11-yr solar activity cycles have been progressively more confined near the surface: new helioseismic results on Cycles 22– 25 from BiSON, Monthly Notices of the Royal Astronomical Society (2026). DOI: 10.1093/mnras/stag847”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
help
Claim 3: “solar-cycle-driven structural changes are becoming increasingly confined to shallow layers, within 1,000km of the sun's surface”
INSUFFICIENT EVIDENCE
While other claims confirm changes are becoming 'shallower' or 'near the surface', no specific evidence provided in the search results explicitly mentions the '1,000km' threshold.
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Claim 4: “the current solar cycle 25 showing particularly strong signatures of these changes”
CORROBORATED
Multiple sources (YourLifeChoices, The Debrief) report that solar cycle 25 shows particularly strong signatures of these structural changes.
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wikipedia NEUTRAL — A total solar eclipse will occur at the Moon's ascending node of orbit on Monday, November 25, 2030, with a magnitude of 1.0468. A solar eclipse occurs when the Moon passes between Earth and the Sun, …
https://en.wikipedia.org/wiki/Solar_eclipse_of_November_25,_…
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wikipedia NEUTRAL — The Solar System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The Solar System is an isolated single-star pla…
https://en.wikipedia.org/wiki/Solar_System
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wikipedia NEUTRAL — Solar cycle 25 is the current solar cycle, the 25th since 1755, when extensive recording of solar sunspot activity began. It began in December 2019 with a minimum smoothed sunspot number of 1.8. It is…
https://en.wikipedia.org/wiki/Solar_cycle_25
+ 3 more evidence sources
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Claim 5: “the link between oscillation frequencies and traditional activity measures has shifted significantly since Cycle 23”
CORROBORATED
Multiple web sources report that the link between oscillation frequencies and traditional activity measures has shifted significantly, specifically noting a drift since around 2005 (Cycle 23).
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web search NEUTRAL — May 27, 2026 · The sun's internal solar-cycle changes appear to be getting increasingly shallow. Helioseismic records across cycles 22–25 show activity ...
https://www.facebook.com/physorg/posts/the-suns-internal-sol…
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web search NEUTRAL — May 27, 2026 · Evidence of changing behavior—the link between oscillation frequencies and traditional activity measures has shifted significantly since ...
https://phys.org/news/2026-05-sun-reveals-previously-hidden-…
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web search NEUTRAL — May 30, 2026 · Since around 2005, those lower-frequency oscillations have drifted away from what traditional activity proxies would have predicted. At the ...
https://www.thebrighterside.news/post/forty-years-of-solar-d…
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Claim 6: “The researchers analyzed the p-mode oscillations—formed by global sound waves inside the sun—whose frequencies shift in response to solar magnetic activity”
CORROBORATED
Web search results from the study's reporting confirm that researchers analyzed p-mode oscillations (global sound waves) and their frequency shifts in response to magnetic activity.
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web search NEUTRAL — Helioseismology is the study of the structure and dynamics of the Sun through its oscillations. These are principally caused by sound waves that are ...
https://en.wikipedia.org/wiki/Helioseismology
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web search NEUTRAL — May 27, 2026 ... The researchers analysed the p-mode oscillations – formed by global sound waves inside the Sun – whose frequencies shift in response to solar ...
https://www.eurekalert.org/news-releases/1129211
travel_explore
web search NEUTRAL — May 27, 2026 ... The researchers analyzed the p-mode oscillations—formed by global sound waves inside the sun—whose frequencies shift in response to solar ...
https://phys.org/news/2026-05-sun-reveals-previously-hidden-…
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Claim 7: “determine how the sun's internal structure changed across solar cycles 22–25, from 1987 to 2025”
CORROBORATED
The Oxford Academic publication specifically mentions the period between 1987 and 2025 covering cycles 22-25.
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wikipedia NEUTRAL — An annular solar eclipse occurred at the Moon's ascending node of orbit on October 22, 2137 BC, with a magnitude of 0.9736. A solar eclipse occurs when the Moon passes between the Earth and Sun, compl…
https://en.wikipedia.org/wiki/Solar_eclipse_of_October_22,_2…
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wikipedia NEUTRAL — A total solar eclipse occurred at the Moon's descending node of orbit on Wednesday, July 22, 2009, with a magnitude of 1.07991. A solar eclipse occurs when the Moon passes between Earth and the Sun, t…
https://en.wikipedia.org/wiki/Solar_eclipse_of_July_22,_2009
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wikipedia NEUTRAL — A total solar eclipse will occur at the Moon's descending node of orbit between Monday, August 22 and Tuesday, August 23, 2044, with a magnitude of 1.0364. A solar eclipse occurs when the Moon passes …
https://en.wikipedia.org/wiki/Solar_eclipse_of_August_23,_20…
+ 3 more evidence sources
verified
Claim 8: “Using almost 40 years of helioseismic data from six telescopes around the world in the Birmingham Solar Oscillations Network (BiSON), the researchers uncovered a gradual change in structure just beneath the surface”
VERIFIED BY REFERENCE
Wikipedia and web search results confirm the Birmingham Solar Oscillations Network (BiSON) consists of six remote solar observatories and has provided long-term helioseismic data.
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wikipedia NEUTRAL — The Birmingham Solar Oscillations Network (BiSON) consists of a network of six remote solar observatories monitoring low-degree solar oscillation modes. It is operated by the High Resolution Optical S…
https://en.wikipedia.org/wiki/Birmingham_Solar_Oscillations_…
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wikipedia NEUTRAL — Helioseismology is the study of the structure and dynamics of the Sun through its oscillations. These are principally caused by sound waves that are continuously driven and damped by convection near t…
https://en.wikipedia.org/wiki/Helioseismology
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wikipedia NEUTRAL — The University of Birmingham (informally Birmingham University) is a public research university in Birmingham, England. It received its royal charter in 1900 as a successor to Queen's College, Birming…
https://en.wikipedia.org/wiki/University_of_Birmingham
+ 3 more evidence sources
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Claim 9: “Publishing its findings in Monthly Notices of the Royal Astronomical Society, an international team led by the University of Birmingham reveals solar magnetic activity is being squeezed into an increasingly shallow layer just below the visible surface”
CORROBORATED
Web search results confirm a study led by the University of Birmingham published in Monthly Notices of the Royal Astronomical Society (MNRAS) regarding magnetic activity being squeezed into shallower layers.
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wikipedia NEUTRAL — Birmingham ( BUR-ming-əm) is a city and metropolitan borough in the West Midlands County, of England. It is the largest local authority district in England by population and the second-largest city i…
https://en.wikipedia.org/wiki/Birmingham
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wikipedia NEUTRAL — Somak Raychaudhury (Bengali: সোমক রায়চৌধুরী) is an Indian astrophysicist. He is the Vice-Chancellor at Ashoka University and was the Director of the Inter-University Centre for Astronomy and Astrophy…
https://en.wikipedia.org/wiki/Somak_Raychaudhury
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wikipedia NEUTRAL — T Coronae Borealis is a binary star and a recurrent nova about 3,000 light-years (920 parsecs) away in the constellation Corona Borealis. T Coronae Borealis is its variable-star designation and the na…
https://en.wikipedia.org/wiki/T_Coronae_Borealis
+ 3 more evidence sources
verified
Claim 10: “by "listening" to tiny sound waves inside the sun—a technique known as helioseismology—it is possible to [look under the solar surface]”
VERIFIED BY REFERENCE
Wikipedia explicitly defines helioseismology as the study of the Sun's structure and dynamics through oscillations caused by sound waves.
travel_explore
web search NEUTRAL — Mendota - Main Office I’ve had a business account with first state for about 7 years. Definitely a great company to bank with! But in the entire 7 years, nobody has ever went out of their way to assis…
https://www.firststatebank.biz/Mendota
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web search NEUTRAL — Enjoy the freedom of banking whenever & wherever you are with our free digital banking services. Stay connected to your accounts with flexibility and ease.
https://www.firststatebank.biz/Account-Services
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web search NEUTRAL — Sycamore Exceptional Service at First State Bank – Thank You, Jacob! I’ve had a wonderful experience working with Jacob at First State Bank. He’s always professional, knowledgeable, and genuinely care…
https://www.firststatebank.biz/Sycamore
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Claim 11: “Internal changes due to the sun's "active biorhythm" have become increasingly "skin-deep" over the past four solar activity cycles”
CORROBORATED
Multiple independent web sources (University of Birmingham, Express.co.uk, The Debrief) confirm that sub-surface structural changes have become progressively more confined near the surface over the specified cycles.
travel_explore
web search NEUTRAL — "We have uncovered evidence of systematic changes in the solar activity cycle. Crucially, magnetic activity is becoming more tightly confined near the surface with each cycle," Chaplin said.
https://www.express.co.uk/news/science/2212702/sun-has-exper…
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web search NEUTRAL — These waves reveal minute changes beneath the surface, providing a very different understanding of the most recent solar cycles than what could be observed from external markers.
https://thedebrief.org/the-sun-may-be-entering-a-different-m…
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web search NEUTRAL — ‘Sub-surface structural changes associated with successive 11-yr solar activity cycles have been progressively more confined near the surface: new helioseismic results on Cycles 22– 25 from BiSON’ - W…
https://www.birmingham.ac.uk/news/2026/listening-to-the-sun-…
verified
Claim 12: “Solar activity rises and falls in 11‑year cycles”
VERIFIED BY REFERENCE
The 11-year solar cycle is a well-established astronomical fact confirmed by multiple cross-references and general scientific consensus.
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wikipedia NEUTRAL — The Sun is the star located at the centre of the Solar System. It is a massive sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surf…
https://en.wikipedia.org/wiki/Sun
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wikipedia NEUTRAL — Solar may refer to:
https://en.wikipedia.org/wiki/Solar
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wikipedia NEUTRAL — The Solar System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The Solar System is an isolated single-star pla…
https://en.wikipedia.org/wiki/Solar_System
+ 4 more evidence sources
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.