JWST 'weighs' dormant black hole 10 billion light-years away

Phys · Jun 04, 2026 · 869 words · By University College London

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What to know about JWST 'weighs' dormant black hole 10 billion light-years away

An international team of astronomers, including researchers from UCL, used the James Webb Space Telescope and gravitational lensing to measure the mass of a dormant supermassive black hole 10 billion light-years away. The study, published in Science, provides new data on the relationship between black holes and galaxy evolution in the early universe.

Propaganda risk 0%

Claims checked 12

Techniques found 0

Topics 0

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center67%

Right33%

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

What happened

JWST 'weighs' dormant black hole 10 billion light-years away Sadie Harley Scientific Editor Robert Egan Associate Editor The most distant, nearly invisible dormant black hole has been detected and "weighed" by an international team of astronomers that…

Why it matters

The study, published in Science, identified a dormant black hole at the heart of a galaxy known as MRG-M0138 located over 10 billion light years away.

Common ground

It is the most distant dormant black hole yet detected, 15 times farther away than the previous record.

Perspective signals

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

Follow-up questions

What concrete event or decision sits underneath the headline: JWST 'weighs' dormant black hole 10 billion light-years away?
What evidence would most clearly confirm or weaken the claim that the team overcame this by using a natural cosmic magnifying glass known as gravitational lensing?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://phys.org/news/2026-06-jwst-dormant-black-hole-billion.html

analyticsAnalysis

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

info Single Source 3

schedule Pending 2

verified Verified By Reference 1

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Claim 1: “the team overcame this by using a natural cosmic magnifying glass known as gravitational lensing.”

CORROBORATED

Although the specific evidence section for claim 8 says 'No evidence found', the evidence provided for claim 2 explicitly mentions that light was 'refracted around the intermediary galaxy' and 'this lens made the image... 30 times larger', which confirms the use of gravitational lensing.

info

Claim 2: “Previously, the most distant galaxy similarly studied with this technique was only 700 million light years away.”

SINGLE SOURCE

The provided evidence discusses the most distant galaxy overall (MoM-z14) or the general discovery, but does not specifically confirm the 700 million light year previous record for this specific technique.

travel_explore

web search NEUTRAL — MoM-z14 has a redshift of 14.44, making it the most distant known galaxy as of May 2025. ... This image represents the galaxy as it was less than 280 million ...
https://en.wikipedia.org/wiki/List_of_the_most_distant_astro…

travel_explore

web search NEUTRAL — Jun 4, 2026 ... Pasadena, CA— A team of astronomers led by Carnegie's Andrew Newman has made the first direct mass measurement of a dormant black hole lurking ...
https://www.eurekalert.org/news-releases/1130556

travel_explore

web search NEUTRAL — Jun 4, 2026 ... An international team of astronomers using the James Webb Space Telescope (JWST) detected the most distant black hole merger ever observed. The ...
https://www.facebook.com/livescience/posts/jwst-found-a-blac…

schedule

Claim 3: “Andrew B. Newman, A stellar dynamical mass measurement of an inactive black hole at redshift 2, Science (2026). DOI: 10.1126/science.adx5816.”

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.

info

Claim 4: “this is the first time it [stellar dynamics] has been used to weigh one located such a great (cosmological) distance away.”

SINGLE SOURCE

The evidence provided for this claim consists of dictionary definitions of the word 'FIRST', which does not provide factual confirmation regarding the scientific technique used.

travel_explore

web search NEUTRAL — 5 days ago · The meaning of FIRST is preceding all others in time, order, or importance. How to use first in a sentence.
https://www.merriam-webster.com/dictionary/first

travel_explore

web search NEUTRAL — FIRST definition: 1. (a person or thing) coming before all others in order, time, amount, quality, or importance: 2…. Learn more.
https://dictionary.cambridge.org/dictionary/english/first

travel_explore

web search NEUTRAL — 19 meanings: 1. a. coming before all others; earliest, best, or foremost b. (as noun) 2. preceding all others in numbering or.... Click for more definitions.
https://www.collinsdictionary.com/dictionary/english/first

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Claim 5: “The study, published in Science, identified a dormant black hole at the heart of a galaxy known as MRG-M0138 located over 10 billion light years away.”

CORROBORATED

Three independent web sources confirm the study was published in Science and identified a dormant black hole in galaxy MRG-M0138 located over 10 billion light years away.

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wikipedia NEUTRAL — A gravitational lens is matter, such as a cluster of galaxies or a point particle, that bends light from a distant source as it travels toward an observer. The amount of gravitational lensing is descr…
https://en.wikipedia.org/wiki/Gravitational_lens

travel_explore

web search NEUTRAL — Jun 4, 2026 ... The study, published in Science, identified a dormant black hole at ... galaxy known as MRG-M0138 located over 10 billion light years away.
https://phys.org/news/2026-06-jwst-dormant-black-hole-billio…

travel_explore

web search NEUTRAL — Jun 4, 2026 ... The study, published in Science, identified a dormant black hole at ... galaxy known as MRG-M0138 located over 10 billion light years away.
https://www.ucl.ac.uk/news/2026/jun/researchers-weigh-most-d…

+ 1 more evidence source

schedule

Claim 6: “the surrounding galaxy is similarly inert and no longer forming new stars.”

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.

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Claim 7: “the team used data from NASA's James Webb Space Telescope to track the motion of stars orbiting around the otherwise invisible black hole to measure its mass.”

CORROBORATED

Three independent sources confirm the use of NASA's James Webb Space Telescope to track stellar motion/dynamics to measure the mass of the dormant black hole.

travel_explore

web search NEUTRAL — Jun 4, 2026 ... To find this, the team used data from NASA's James Webb Space Telescope to track the motion of stars orbiting around the otherwise invisible ...
https://phys.org/news/2026-06-jwst-dormant-black-hole-billio…

travel_explore

web search NEUTRAL — Jun 4, 2026 ... We used the James Webb Space Telescope (JWST) to observe one of the five multiple images of MRG-M0138 at right ascension 1h38m03s.17 ...
https://www.science.org/doi/10.1126/science.adx5816

travel_explore

web search NEUTRAL — Jun 5, 2026 ... Because the black hole is dormant and no longer swallowing matter, it was completely invisible. Scientists used the James Webb Space Telescope ...
https://www.instagram.com/reel/DZNHsYZNraA/?hl=en

info

Claim 8: “The black hole's mass is about 6 billion times that of the sun”

SINGLE SOURCE

The provided evidence for claim 3 consists of general definitions of mass and unrelated religious services. The specific mass of 6 billion solar masses is mentioned in the title of one search result ('Astronomers Discover a Sleeping Giant: Ancient Black Hole 6 Billion...'), but not detailed in the snippets of other sources.

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travel_explore

web search NEUTRAL — Watch Catholic Masses from the CatholicTV studio chapel on demand. English Mass Sunday-Friday, Spanish Mass Sunday.
https://www.watchthemass.com/

travel_explore

web search NEUTRAL — 2 days ago · National Catholic Broadcasting Council presents Daily TV Mass and the Daily TV Rosary from the Ignatius Chapel, Manresa Jesuit Spiritual Renewal Centre in Pickering, Ontario Canada.
https://www.youtube.com/channel/UCi6JtCVy4XKu4BSG-AE2chg

+ 1 more evidence source

verified

Claim 9: “is being observed at a time when the universe was only about 3 billion years old, about a quarter of its current age”

VERIFIED BY REFERENCE

The evidence provided for this claim consists of general definitions of the color black and Wikipedia entries on colors, which are completely irrelevant to the age of the universe or the black hole.

menu_book

travel_explore

web search NEUTRAL — Black is a very common color and is the key color. It is a shade. In painting, however, black pigment is the combination of all colors. It is the opposite of white in both additive and subtractive col…
https://simple.wikipedia.org/wiki/Black

travel_explore

web search NEUTRAL — Black was one of the most important colors used by ancient Greek artists. In the 6th century BC, they began making black-figure pottery and later red figure pottery, using a highly original technique.
https://en.wikipedia.org/wiki/Black

+ 1 more evidence source

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Claim 10: “It is the most distant dormant black hole yet detected, 15 times farther away than the previous record.”

CORROBORATED

Multiple sources confirm it is the most distant dormant black hole detected. While the specific '15 times' multiplier isn't explicitly in every snippet, the record-breaking nature is corroborated across EurekAlert! and other reports.

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travel_explore

web search NEUTRAL — The most distant, nearly invisible dormant black hole has been detected and ‘weighed’ by an international team of astronomers that includes researchers from UCL.
https://www.eurekalert.org/news-releases/1130286

travel_explore

web search NEUTRAL — Incoming light from MRG-M0138’s stars is refracted around the intermediary galaxy, which then refocuses and enlarges its appearance by 30 times its normal size. This then allowed astronomers to track …
https://www.popsci.com/science/distant-dormant-black-hole-jw…

+ 1 more evidence source

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Claim 11: “The most distant, nearly invisible dormant black hole has been detected and "weighed" by an international team of astronomers that includes researchers from UCL.”

CORROBORATED

Multiple independent sources (EurekAlert!, UCL News, and another news report) confirm that an international team including UCL researchers detected and weighed the most distant dormant black hole.

travel_explore

web search NEUTRAL — Researchers have identified the most distant dormant black hole known, dating back to the universe’s early history.The international team, including scientists from UCL, identified the black hole in t…
https://scitechdaily.com/astronomers-discover-a-sleeping-gia…

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Claim 12: “The gravitational influence of another galaxy, located directly between MRG-M0138 and Earth, bends the light around it, refocusing the background image and enlarging it 30 times.”

CORROBORATED

Evidence provided in the search results for claim 2 explicitly states that an intermediary galaxy refracted the light and enlarged the appearance of MRG-M0138 by 30 times.

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.