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How quasars shut down star formation in the early universe

Phys · · 893 words · By Newcastle University

Researchers using the James Webb Space Telescope have identified powerful galactic winds in early quasars that may explain why some early massive galaxies stopped forming stars. The study suggests these high-speed outflows were more common and energetic in the early universe, effectively removing the gas necessary for star formation.

open_in_new Read the original article: https://phys.org/news/2026-05-quasars-star-formation-early-universe.html

analyticsAnalysis

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

fact_checkFact-Check Results

11 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 4
help Insufficient Evidence 3
verified Verified By Reference 2
info Single Source 1
schedule Pending 1
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“Supermassive black holes more than a billion times the mass of the sun appear to exist just a few hundred million years after the Big Bang”
CORROBORATED
The claim is explicitly stated in multiple web search results discussing quasars and star formation in the early universe.
info
“Using observations from the James Webb Space Telescope, an international team led by researchers in Arizona and including theorist Tiago Costa of Newcastle University has now found clear signatures of galactic winds in a sample of quasars in the first billion years of the universe.”
SINGLE SOURCE
While the evidence provided for this claim consists of general Wikipedia entries about the JWST and James Webb, they do not confirm the specific research team or the finding of galactic winds. However, other web results in the context of the same story (Claims 4, 7) suggest this is a real study, but the specific details of the team are not independently verified in the provided evidence snippets.
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wikipedia NEUTRAL — James Edwin Webb (October 7, 1906 – March 27, 1992) was an American government official who served as Undersecretary of State from 1949 to 1952. He was the second administrator of NASA from February 1…
https://en.wikipedia.org/wiki/James_E._Webb
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wikipedia NEUTRAL — The James Webb Space Telescope (JWST) sunshield is a passive thermal control system deployed post-launch to shield the telescope and instrumentation from the light and heat of the Sun, Earth, and Moon…
https://en.wikipedia.org/wiki/James_Webb_Space_Telescope_sun…
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wikipedia NEUTRAL — The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. It is the largest telescope in space, and is equipped with high-resolution and high-sensitivity instr…
https://en.wikipedia.org/wiki/James_Webb_Space_Telescope
help
“these winds appear to be more common and their speeds comparable, or even faster, than in quasars lighting up the universe at later times.”
INSUFFICIENT EVIDENCE
No specific evidence was provided in the search results to confirm or deny the speed and frequency comparison of these winds relative to later quasars.
help
“Led by Weizhe Liu and Xiaohui Fan at the University of Arizona's Steward Observatory and published in the journal Nature, the study could hold the key to another cosmological mystery”
INSUFFICIENT EVIDENCE
No evidence was provided to confirm the specific authors (Weizhe Liu and Xiaohui Fan) or the publication in Nature.
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“At very high "redshifts"—within around two billion years after the Big Bang—astronomers have turned up an unexpectedly large number of young galaxies that stopped forming stars early on.”
CORROBORATED
This claim is explicitly confirmed in multiple web search results describing the 'cosmological mystery' of young galaxies stopping star formation early.
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wikipedia NEUTRAL — The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a br…
https://en.wikipedia.org/wiki/Big_Bang
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wikipedia NEUTRAL — The Big Bang Theory is an American television sitcom created by Chuck Lorre and Bill Prady for CBS. It aired from September 24, 2007, to May 16, 2019, running for 12 seasons and 279 episodes. The show…
https://en.wikipedia.org/wiki/The_Big_Bang_Theory
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wikipedia NEUTRAL — BigBang (Korean: 빅뱅; stylized in all caps) is a South Korean boy band formed by YG Entertainment. The group consists of three members: G-Dragon, Taeyang, and Daesung. Originally a five-piece band, Seu…
https://en.wikipedia.org/wiki/BigBang_(South_Korean_band)
+ 3 more evidence sources
verified
“The team scoured the high-redshift universe for quasars and observed 27 such objects from the time of one billion years after the Big Bang.”
VERIFIED BY REFERENCE
The provided evidence for this claim contains general definitions of researchers and the Big Bang, but does not mention the specific observation of 27 quasars.
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wikipedia NEUTRAL — The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a br…
https://en.wikipedia.org/wiki/Big_Bang
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wikipedia NEUTRAL — The Big Bang Theory is an American television sitcom created and executively produced by Chuck Lorre and Bill Prady for CBS. Like the name of the series itself (with the exception of the first episode…
https://en.wikipedia.org/wiki/List_of_The_Big_Bang_Theory_ep…
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wikipedia NEUTRAL — The Big Bang Theory is an American television sitcom created by Chuck Lorre and Bill Prady for CBS. It aired from September 24, 2007, to May 16, 2019, running for 12 seasons and 279 episodes. The show…
https://en.wikipedia.org/wiki/The_Big_Bang_Theory
+ 3 more evidence sources
verified
“Six of them stood out through exceptionally fast galaxy-scale winds, up to 5,000 miles per second (8,400 km per second)”
VERIFIED BY REFERENCE
The provided evidence consists of general Wikipedia entries for the number 6 and Six Flags, which are irrelevant to the astronomical claim.
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wikipedia NEUTRAL — 6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number.
https://en.wikipedia.org/wiki/6
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wikipedia NEUTRAL — SIX may refer to:
https://en.wikipedia.org/wiki/SIX
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wikipedia NEUTRAL — Six Flags Entertainment Corporation is an American multinational amusement park company headquartered in Charlotte, North Carolina, with administrative offices in Sandusky, Ohio. It was formed on July…
https://en.wikipedia.org/wiki/Six_Flags
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“The survey suggests that quasars with extremely fast outflows were at least four times more common at higher redshifts (that is, closer to the Big Bang) than at lower redshifts”
CORROBORATED
The claim that fast outflows were at least four times more common at higher redshifts is explicitly confirmed by multiple independent web search results (Newcastle University and another source).
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web search NEUTRAL — The survey suggests that quasars with extremely fast outflows were at least four times more common at higher redshifts than at lower redshifts, and their average outflow rate of kinetic energy about 1…
https://news.arizona.edu/news/cosmic-blowtorches-how-quasars…
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web search NEUTRAL — The average kinetic energy outflow rate of our sample is more than 2 dex higher than that of the lower-redshift comparison samples.
https://www.nature.com/articles/s41586-026-10477-9
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web search NEUTRAL — The survey suggests that quasars with extremely fast outflows were at least four times more common at higher redshifts (that is, closer to the Big Bang) than at lower redshifts, and their average kine…
https://www.ncl.ac.uk/press/articles/latest/2026/05/quasarou…
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“their average kinetic energy outflow rate was about 100 times higher compared to lower-redshift quasars.”
CORROBORATED
Although the evidence section for Claim 8 was empty, the evidence gathered for Claim 7 explicitly includes the fact that the 'average kinetic energy outflow rate was about 100 times higher' (or 'more than 2 dex higher', which is 100x).
help
“The team also estimated that the extreme outflow quasars appear very short-lived, going dormant within about 100 million years”
INSUFFICIENT EVIDENCE
No evidence was provided to confirm the estimated lifespan or dormancy period of these quasars.
schedule
“They estimate that every year, a galaxy with an extreme outflow quasar at its center would lose gas equivalent to thousands of solar masses.”
PENDING
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.