Scientists Develop World's First Nuclear Clocks
These new devices track atomic nuclei and promise unprecedented accuracy for timekeeping and research.
AI-assisted coverage comparison, editor-supervised · How this was made
The experimental clocks operate by firing very precise lasers at thorium-containing crystals. (Supplied: T. Schumm/TU Wien)
Photograph: ABC Australia (embedded from source)
What this story says
- Two independent scientific teams have developed the world's first functional nuclear clocks.
- Unlike atomic clocks that track electron changes, nuclear clocks monitor shifts within an atom's nucleus.
- These new clocks, utilising thorium-229, are so precise they would deviate by only one second over 30 million years.
- Potential applications include enhanced navigation, mining surveys, earthquake prediction, and dark matter detection.
Who covered it
Percentages are shares of the 26 outlets carrying a published leaning rating. 26 of the 52 outlets we know ran this story carry no rating and are not counted in them. Coverage measured .
Trust
60/100
Craft
65/100
Hype
45/100
52 sources · methodology
Two independent teams of scientists have created the world's first functional nuclear clocks. These devices measure time by tracking changes within an atom's nucleus, a departure from current atomic clocks which monitor electron behaviour. The research, published in the journal Nature, details clocks so accurate they would lose only a second over 30 million years.
The nuclear clocks utilise thorium-229. Scientists have theorised about nuclear clocks for over two decades, but technological and theoretical limitations previously prevented their development. Recent breakthroughs in laser precision and material science have enabled the creation of these prototypes. Researchers anticipate rapid improvements to the technology.
Accuracy and Applications
While the current accuracy of these nuclear clocks does not surpass the best existing atomic clocks, their developers are confident in future improvements. Potential applications for this enhanced precision include more accurate navigation systems, detailed mining surveys, and improved earthquake prediction by measuring gravitational fields. The clocks could also serve as a new tool for fundamental physics research, including the detection of dark matter.
Coverage Comparison
Omissions in coverage
None of the left-rated digests mention the specific stability comparison between the Chinese and Viennese clocks that was highlighted in some centre and right-rated reports. None of the centre-rated digests mention the specific accuracy claim of one second over 30 million years, which was present in left and right-rated reports.
Still developing. We have re-checked which outlets are covering this 8 times, most recently on 8 Oct 2026, 12:15, and will add the sides that appear.
How each side covered it
Our own reading of the reporting listed below, written from the outlets’ articles rather than quoted from them. The reasoning is set out on our methodology page.
Left
6 rated outlets
- Left-rated reports highlighted the potential for nuclear clocks to become the world's most accurate timekeepers, with ABC Australia quoting physicist Victor Flambaum stating they could be the "most accurate instrument humans have ever built." The Independent and The Independent (US) noted the breakthrough could help understand dark matter and other fundamental questions of the universe. IFLScience pointed to the clocks as a new tool for probing fundamental forces and hunting for dark matter. El Pais framed the development as the dawn of a new era in time measurement for exploring the laws of physics.
Centre
9 rated outlets
- Centre-rated reports focused on the creation of the clocks and their potential to surpass atomic predecessors. The Japan Times mentioned a scientist envisioning uses in satellite navigation and data transfer synchronisation. Interesting Engineering and TechJuice specifically highlighted that China's nuclear clock demonstrated a six-times greater stability than the one developed in Vienna. Business Recorder noted the 50-year dream of nuclear clocks was now a reality, set to revolutionise timekeeping.
Right
11 rated outlets
- Right-rated reports generally announced the creation of the world's first nuclear clocks, with India Today posing the question of why it matters. Globo and ARY News reported on the scientific teams in Vienna and Beijing developing the devices. OKDIARIO framed the development as the beginning of the age of nuclear clocks and a countdown to the most accurate time measurement in history. Kronen Zeitung reported that Vienna has the world's first atomic nuclear clock.
Questions about this coverage
- How did the left and right cover Scientists Develop World's First Nuclear Clocks?
- Of the 26 outlets on this story carrying a published leaning rating, 23% are rated left, 35% are rated centre, 42% are rated right. Those percentages are shares of the rated outlets, not of every outlet that ran it, which was 52. The sections above set out what each side emphasised, in its own terms.
- Is Scientists Develop World's First Nuclear Clocks left or right?
- Neither side dominates it. Of the 26 rated outlets on this story, 23% are rated left, 35% are rated centre, 42% are rated right, and no side holds the 70% this site would want before calling a field one-sided. A story is not left or right in any case; the outlets that carried it are what carry ratings.
- Is the coverage of Scientists Develop World's First Nuclear Clocks biased?
- Scientists Develop World's First Nuclear Clocks is one event reported by 52 outlets, and this page does not rate the story as biased or unbiased. What it publishes is the spread: which outlets ran it, where named rating organisations place each of them on the spectrum, and what each side chose to lead with. A leaning rating describes an outlet's record over time, not this article, and the two should not be run together.
- Which outlets covered Scientists Develop World's First Nuclear Clocks?
- 52 that we know of, every one of them listed further up this page with a link to its own report and to what we hold on the publisher. Nothing here is a summary of somebody else's summary: the outlets are named so the original reporting can be read.
- What is a nuclear clock?
- A nuclear clock is a new type of timekeeping device that tracks changes within the nucleus of an atom, unlike traditional atomic clocks which monitor electron changes. This method allows for significantly higher precision in measuring time.
- How accurate are these new nuclear clocks?
- The newly developed nuclear clocks are extremely accurate, with a projected deviation of only one second over a span of 30 million years. This level of precision far exceeds current atomic clock capabilities.
- What are the potential applications for nuclear clocks?
- The high accuracy of nuclear clocks could lead to improvements in navigation systems like GPS, more precise mining surveys, and better earthquake prediction. They also offer new possibilities for fundamental physics research, including the search for dark matter.
- Which elements are used in these nuclear clocks?
- The nuclear clocks developed by the two independent teams utilise a specific isotope of thorium, known as thorium-229. This element possesses the necessary properties for precise timekeeping at the nuclear level.
Read it at the source
52 outlets, grouped by the leaning a published rating gives them. Every headline links to the original; an underlined outlet name opens our profile of that publisher.
Left
6- The Nuclear Clock Rings Its First Blows (opens Le Monde in a new tab)
- First-Ever Thorium-Based Nuclear Atomic Clock Is A New Tool To Probe Fundamental Forces – And Even Hunt For Dark Matter (opens IFLScience in a new tab)
IFLScience — is IFLScience biased? Our profile of this outlet
- Scientists invent entirely new kind of clock (opens The Independent (US) in a new tab)
The Independent (US) — is The Independent (US) biased? Our profile of this outlet
- Scientists invent entirely new kind of clock (opens The Independent in a new tab)
The Independent — is The Independent biased? Our profile of this outlet
- The Age of Nuclear Clocks Is Already Here: the New Tick to Explore the Laws of Physics (opens El Pais in a new tab)
- New nuclear clocks could become world's most accurate timekeepers (opens ABC Australia in a new tab)
ABC Australia — is ABC Australia biased? Our profile of this outlet
Centre
9- Scientists in Vienna and Beijing create world’s first nuclear clocks (opens The Japan Times in a new tab)
The Japan Times — is The Japan Times biased? Our profile of this outlet
- China beats world's first nuclear clock with 6x stability edge (opens Interesting Engineering in a new tab)
Interesting Engineering — is Interesting Engineering biased? Our profile of this outlet
- The world’s first nuclear clocks are ticking (opens Popular Science in a new tab)
Popular Science — is Popular Science biased? Our profile of this outlet
- New Steps Towards Clocks Even More Precise than Atomic Ones (opens Hola News in a new tab)
- Scientists in Vienna and Beijing create world’s first nuclear clocks (opens WTVB in a new tab)
- Scientists in Vienna and Beijing create world's first nuclear clocks (opens Business Recorder in a new tab)
Business Recorder — is Business Recorder biased? Our profile of this outlet
- China’s thorium-229 nuclear clock beats Vienna’s on stability, studies show (opens South China Morning Post in a new tab)
South China Morning Post — is South China Morning Post biased? Our profile of this outlet
- Nuclear clocks tick for the first time (opens Nature in a new tab)
Right
11- World's first nuclear clock is ready: What is it, and why does it matter? (opens India Today in a new tab)
India Today — is India Today biased? Our profile of this outlet
- Scientists Create the World's First Nuclear Clocks (opens Globo in a new tab)
- Scientists in Vienna and Beijing create world's first nuclear clocks (opens ARY News in a new tab)
- The Age of Nuclear Clocks Begins: Countdown for the Most Accurate Time Measurement in History (opens OKDIARIO in a new tab)
- European Physicists Have Developed the First Autonomous Nuclear Clock (opens vz.ru in a new tab)
- World’s first nuclear clocks created in Vienna and Beijing (opens The Straits Times in a new tab)
The Straits Times — is The Straits Times biased? Our profile of this outlet
- In Vienna There Is the World's First Atomic Nuclear Clock (opens Kronen Zeitung in a new tab)
Kronen Zeitung — is Kronen Zeitung biased? Our profile of this outlet
- New Era of Time Measurement: First Core Clocks of the World Brought to Tick (opens n-tv in a new tab)
Show 3 more
- The First Functional Nuclear Clocks Are Already a Reality: They Stabilize Themselves and Track Dark Matter Signals (opens El Mundo in a new tab)
- The Atomic Clock Is Dead: Long Live the Nuclear Clock! (opens ABC in a new tab)
- Measuring Time with Atomic Nuclei… First Implementation of a ‘Nuclear Clock’ (opens Unknown in a new tab)
Unknown
Not rated
26- One Second Deviation in 30 Million Years: Viennese Researchers Build New Atomic Nuclear Clock (opens ingenieur.de in a new tab)
ingenieur.de — is ingenieur.de biased? Our profile of this outlet
- China Wants to Have Already Beaten the Recently Presented Viennese Atomic Clock (opens futurezone.at in a new tab)
futurezone.at — is futurezone.at biased? Our profile of this outlet
- Why World’s First Nuclear Clock Could Change Timekeeping (opens Pakistan Live News in a new tab)
Pakistan Live News — is Pakistan Live News biased? Our profile of this outlet
- The World's First Nuclear Clocks Have Been Created, Paving the Way for a New Era in Time Measurement. (opens Naftemporiki in a new tab)
Naftemporiki — is Naftemporiki biased? Our profile of this outlet
- Scientists in Vienna and Beijing Build World's First Nuclear Clocks Using Thorium-229 in Timekeeping Leap (opens IBTimes Australia in a new tab)
IBTimes Australia — is IBTimes Australia biased? Our profile of this outlet
- Nuclear Clocks: New Era of Timekeeping From Vienna and Beijing (opens Libre in a new tab)
- In Vienna and Beijing, the First Nuclear Clocks Begin to “Ring” (opens ertnews.gr in a new tab)
ertnews.gr — is ertnews.gr biased? Our profile of this outlet
- China Builds Nuclear Clock Six Times Steadier Than Rival (opens TechJuice in a new tab)
Show 18 more
- TU Vienna Measures Time in the Future Unimaginably Accurate (opens Moneycab in a new tab)
- The World's First Nuclear Clock Was Created After Nearly 50 Years. (opens TUOI TRE ONLINE in a new tab)
TUOI TRE ONLINE — is TUOI TRE ONLINE biased? Our profile of this outlet
- Scientists Have Done It: A Completely New Type of Watch Has Been Developed. (opens ekonomim.com in a new tab)
ekonomim.com — is ekonomim.com biased? Our profile of this outlet
- Scientists Make Historic Discovery: A New Type of Clock Invented. (opens anlatilaninotesi.com.tr in a new tab)
anlatilaninotesi.com.tr — is anlatilaninotesi.com.tr biased? Our profile of this outlet
- Core Instead of Shell: The First Atomic Clock Ticks (opens wissenschaft.de in a new tab)
wissenschaft.de — is wissenschaft.de biased? Our profile of this outlet
- Scientists Create Functional Nuclear Clocks - 08/10/2026 (opens Folha de S.Paulo in a new tab)
Folha de S.Paulo — is Folha de S.Paulo biased? Our profile of this outlet
- Chinese scientists develop working nuclear optical clock (opens Ecns in a new tab)
- A Groundbreaking Discovery in the Scientific World: A New Way to Measure Time Has Been Found! (opens haberglobal.com in a new tab)
haberglobal.com — is haberglobal.com biased? Our profile of this outlet
- The World's First Nuclear Clocks Have Been Created Simultaneously and Independently in Vienna and Beijing. (opens Mediafax in a new tab)
- Scientists Have Created the World ' S First Self-Contained Ultra-Precision Nuclear Clock at Toria-229 (opens belta.by in a new tab)
- The First Ultra-Precise Nuclear Clocks Were Presented. Why Does It Matter to GPS, Banks and Electricity Networks? (opens antena3.ro in a new tab)
antena3.ro — is antena3.ro biased? Our profile of this outlet
- They Dreamed About a Nuclear Clock for 50 Years, Then It Was Developed Simultaneously in Vienna and Beijing (opens Dnevnik in a new tab)
- The Physicists Launched a Nuclear Clock on Toria 229 on Homemade Crystals. (opens nplus1.ru in a new tab)
- Physics Breakthrough: The Hunt for the Perfect Watch: Researchers Make Core Clocks Run for the First Time (opens geo in a new tab)
- First Atomic Clock in the World Runs at the Vienna Atomic Institute (opens suedtirolnews.it in a new tab)
suedtirolnews.it — is suedtirolnews.it biased? Our profile of this outlet
- First Atomic Nuclear Clock in the World at the Vienna Atomic Institute (opens vienna.at in a new tab)
- First Self-Stabilizing Atomic Nuclear Clock Runs over 24 Hours (opens scinexx.de in a new tab)
scinexx.de — is scinexx.de biased? Our profile of this outlet
- Scientists From Vienna and Beijing Create the World’s First Nuclear Clocks (opens El Economista in a new tab)
El Economista — is El Economista biased? Our profile of this outlet
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