---
title: "Scientists Develop World's First Nuclear Clocks"
publication: "MediaBias News"
url: "https://mediabias.news/tech/scientists-develop-worlds-first-nuclear-clocks"
api: "https://mediabias.news/api/v1/stories/scientists-develop-worlds-first-nuclear-clocks"
markdown: "https://mediabias.news/tech/scientists-develop-worlds-first-nuclear-clocks.md"
audio: "https://mediabias.news/api/audio/scientists-develop-worlds-first-nuclear-clocks"
category: "Science & Tech"
area: "China"
published: "2026-10-08T10:25:13.475Z"
source_reported: "2026-10-08T09:24:41.000Z"
updated: "2026-10-08T10:25:13.475Z"
trust_score: 60
critic_score: 65
hype_score: 45
assessment_type: "coverage-and-source-reporting-analysis"
fact_check_status: "not-performed"
coverage_measured: "2026-10-08T12:30:09.533297+00:00"
---

# Scientists Develop World's First Nuclear Clocks

*These new devices track atomic nuclei and promise unprecedented accuracy for timekeeping and research.*

**Scores for the source reporting** (0-100, assessing the original journalism this article was written from, not this write-up): 

- Trust 60 of 100, higher is better. Central claims attributed to named bodies and published in Nature; two independent teams reported.
- Craft 65 of 100, higher is better. Reports explain what nuclear clocks are, how they work, and their potential applications.
- Hype 45 of 100, lower is better. Headlines promise a new era and the death of atomic clocks, but the body is more measured.

Scored by MediaBias News; method at https://mediabias.news/methodology.

**The short version**

- 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.

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.

## Who covered it

Shares of the 26 covering outlets with a published leaning rating:

- Left: 23% (6)
- Centre: 35% (9)
- Right: 42% (11)

28 of 54 covering outlets carried no usable leaning rating and were excluded from those percentages. Coverage measured 2026-10-08T12:30:09.533297+00:00.

**Coverage watch:** developing. Checked 11 times; 0 checks found a material change. Most recently checked 2026-10-08T13:00:07.797Z.

## How the sides framed it

### Left

- 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

- 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

- 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.

## Factuality profile of the covering outlets

These are published factuality ratings of the outlets, not a verdict on whether this story or its claims are true.

- mixed: 5
- high: 11
- unknown: 28
- veryHigh: 10

## Verification scope

This page compares coverage and scores the source reporting. It is not a ClaimReview verdict on whether the underlying event or claim is true.

## Original reporting this was written from

- [BIOENGINEER.ORG](https://bioengineer.org/nuclear-clock-runs-steady-for-over-a-day-in-thorium-breakthrough) — Nuclear Clock Runs Steady for Over a Day in Thorium Breakthrough
- [Mathrubhumi](https://mathrubhumi.com/technology/news/worlds-first-nuclear-clocks-built-scientists-thorium-229-nz47sl0x) — Scientists in Austria and China Develop World's First Nuclear Clock
- [ingenieur.de - Jobbörse und Nachrichtenportal für Ingenieure](https://ingenieur.de/technik/fachbereiche/rekorde/eine-sekunde-abweichung-in-30-mio-jahren-wiener-forscher-bauen-neue-atomkernuhr) — One Second Deviation in 30 Million Years: Viennese Researchers Build New Atomic Nuclear Clock
- [futurezone.at](https://futurezone.at/science/atomkernuhr-atomuhr-tu-wien-china-thorium-229-stabilitaet-genauigkeit/403196668) — China Wants to Have Already Beaten the Recently Presented Viennese Atomic Clock
- [Pakistan Live News](https://pakistanlivenews.com/why-worlds-first-nuclear-clock-could-change-timekeeping) — Why World’s First Nuclear Clock Could Change Timekeeping
- [Naftemporiki](https://naftemporiki.gr/techscience/2172308/dimioyrgithikan-ta-prota-pyrinika-rologia-ston-kosmo-poy-anoigoyn-to-dromo-gia-mia-nea-epochi-sti-metrisi-toy-chronoy) — The World's First Nuclear Clocks Have Been Created, Paving the Way for a New Era in Time Measurement.
- [IBTimes Australia](https://ibtimes.com.au/first-operating-nuclear-clocks-austria-china-1876440) — Scientists in Vienna and Beijing Build World's First Nuclear Clocks Using Thorium-229 in Timekeeping Leap
- [Libre](https://libre.gr/2026/10/08/vienni-kai-pekino-ta-prota-pyrinika-ro) — Nuclear Clocks: New Era of Timekeeping From Vienna and Beijing
- [www.ertnews.gr](https://ertnews.gr/eidiseis/sti-vienni-kai-sto-pekino-ta-prota-pyrinika-rologia-arxizoun-na-xtypoun) — In Vienna and Beijing, the First Nuclear Clocks Begin to “Ring”
- [India Today](https://indiatoday.in/science/story/nuclear-clock-breakthrough-austria-china-build-worlds-first-operating-devices-3012281-2026-10-08) — World's first nuclear clock is ready: What is it, and why does it matter?
- [TechJuice](https://techjuice.pk/china-tsinghua-nuclear-clock-thorium-229-stability) — China Builds Nuclear Clock Six Times Steadier Than Rival
- [Globo](https://g1.globo.com/ciencia/noticia/2026/10/08/cientistas-em-viena-e-pequim-criam-primeiros-relogios-nucleares-do-mundo.ghtml) — Scientists Create the World's First Nuclear Clocks
- [Moneycab](https://moneycab.com/dossiers/tu-wien-misst-zeit-kuenftig-unvorstellbar-genau) — TU Vienna Measures Time in the Future Unimaginably Accurate
- [TUOI TRE ONLINE](https://tuoitre.vn/dong-ho-hat-nhan-dau-tien-tren-the-gioi-ra-doi-sau-gan-50-nam-100261008101604503.htm) — The World's First Nuclear Clock Was Created After Nearly 50 Years.
- [ekonomim.com](https://ekonomim.com/sektorler/teknoloji/bilim-insanlari-basardi-tamamen-yeni-bir-saat-turu-gelistirildi-haberi-923289) — Scientists Have Done It: A Completely New Type of Watch Has Been Developed.
- [anlatilaninotesi.com.tr](https://anlatilaninotesi.com.tr/20261008/bilim-insanlarindan-tarihi-bulus-yeni-bir-saat-turu-icat-edildi-1109377293.html) — Scientists Make Historic Discovery: A New Type of Clock Invented.
- [wissenschaft.de](https://wissenschaft.de/artikel/kern-statt-huelle-die-erste-atomkernuhr-tickt) — Core Instead of Shell: The First Atomic Clock Ticks
- [Folha de S.Paulo](https://redir.folha.com.br/redir/online/emcimadahora/rss091/*https://www1.folha.uol.com.br/ciencia/2026/10/cientistas-em-viena-e-pequim-criam-os-primeiros-relogios-nucleares-do-mundo.shtml) — Scientists Create Functional Nuclear Clocks - 08/10/2026
- [Ecns](http://ecns.cn/cns-wire/2026-10-08/detail-ihfkxmcz6610716.shtml) — Chinese scientists develop working nuclear optical clock
- [haberglobal.com](https://haberglobal.com/bilim-teknoloji/bilim-dunyasinda-cigir-acan-kesif-zamani-olcmenin-yeni-yolu-bulundu-547706) — A Groundbreaking Discovery in the Scientific World: A New Way to Measure Time Has Been Found!
- [The Japan Times](https://japantimes.co.jp/news/2026/10/08/world/science-health/china-vienna-first-nuclear-clocks) — Scientists in Vienna and Beijing create world’s first nuclear clocks
- [Mediafax](https://mediafax.ro/stiinta-sanatate/primele-ceasuri-nucleare-din-lume-au-fost-create-simultan-si-independent-la-viena-si-beijing-cum-ar-putea-schimba-modul-in-care-masuram-timpul-23821580) — The World's First Nuclear Clocks Have Been Created Simultaneously and Independently in Vienna and Beijing.
- [belta.by](https://belta.by/tech/view/uchenye-sozdali-pervye-v-mire-avtonomnye-sverhtochnye-jadernye-chasy-na-baze-torija-229-804903-2026) — Scientists Have Created the World ' S First Self-Contained Ultra-Precision Nuclear Clock at Toria-229
- [antena3.ro](https://antena3.ro/externe/au-fost-prezentate-primele-ceasuri-nucleare-ultraprecise-de-ce-conteaza-pentru-gps-banci-si-retelele-electrice-806236.html) — The First Ultra-Precise Nuclear Clocks Were Presented. Why Does It Matter to GPS, Banks and Electricity Networks?
- [Interesting Engineering](https://interestingengineering.com/science/china-nuclear-clock-stability) — China beats world's first nuclear clock with 6x stability edge
- [ARY News](https://arynews.tv/scientists-in-vienna-and-beijing-create-worlds-first-nuclear-clocks) — Scientists in Vienna and Beijing create world's first nuclear clocks
- [Popular Science](https://popsci.com/technology/first-nuclear-clocks) — The world’s first nuclear clocks are ticking
- [Dnevnik](https://dnevnik.si/nedeljski/prosti-cas/znanost-in-tehnologija/o-jedrski-uri-sanjali-50-let-nato-pa-so-jo-hkrati-razvili-na-dunaju-in-pekingu-2832495) — They Dreamed About a Nuclear Clock for 50 Years, Then It Was Developed Simultaneously in Vienna and Beijing
- [OKDIARIO](https://okdiario.com/ciencia/comienza-era-relojes-nucleares-cuenta-atras-medicion-del-tiempo-mas-precisa-historia-20506833) — The Age of Nuclear Clocks Begins: Countdown for the Most Accurate Time Measurement in History
- [Le Monde](https://lemonde.fr/sciences/article/2026/10/07/l-horloge-nucleaire-sonne-ses-premiers-coups_6789635_1650684.html) — The Nuclear Clock Rings Its First Blows
- [IFLScience](https://iflscience.com/first-ever-thorium-based-nuclear-atomic-clock-is-a-new-tool-to-probe-fundamental-forces-and-even-hunt-for-dark-matter-84868) — First-Ever Thorium-Based Nuclear Atomic Clock Is A New Tool To Probe Fundamental Forces – And Even Hunt For Dark Matter
- [vz.ru](https://vz.ru/news/2026/10/7/1460083.html) — European Physicists Have Developed the First Autonomous Nuclear Clock
- [Hola News](https://holanews.com/nuevos-pasos-hacia-relojes-mas-precisos-aun-que-los-atomicos) — New Steps Towards Clocks Even More Precise than Atomic Ones
- [The Straits Times](https://straitstimes.com/world/europe/scientists-in-vienna-and-beijing-create-worlds-first-nuclear-clocks) — World’s first nuclear clocks created in Vienna and Beijing
- [WTVB](https://wtvbam.com/2026/10/07/scientists-in-vienna-and-beijing-create-worlds-first-nuclear-clocks) — Scientists in Vienna and Beijing create world’s first nuclear clocks
- [The Independent](https://independent.co.uk/tech/clock-new-atomic-nuclear-time-b3062910.html) — Scientists invent entirely new kind of clock
- [The Independent (US)](https://the-independent.com/tech/clock-new-atomic-nuclear-time-b3062910.html) — Scientists invent entirely new kind of clock
- [Business Recorder](https://brecorder.com/news/40443116) — Scientists in Vienna and Beijing create world's first nuclear clocks
- [nplus1.ru](https://nplus1.ru/news/2026/10/07/nuclear-clocks-on-thorium229) — The Physicists Launched a Nuclear Clock on Toria 229 on Homemade Crystals.
- [Kronen Zeitung](https://krone.at/4324124) — In Vienna There Is the World's First Atomic Nuclear Clock
- [n-tv](https://n-tv.de/wissen/Erste-Kernuhren-der-Welt-zum-Ticken-gebracht-id31392569.html) — New Era of Time Measurement: First Core Clocks of the World Brought to Tick
- [geo](https://geo.de/wissen/forschung-und-technik/physik-durchbruch--erstmals-funktionieren-kernuhren-gebaut-38360224.html) — Physics Breakthrough: The Hunt for the Perfect Watch: Researchers Make Core Clocks Run for the First Time
- [suedtirolnews.it](https://suedtirolnews.it/chronik/erste-atomkernuhr-der-welt-laeuft-am-wiener-atominstitut) — First Atomic Clock in the World Runs at the Vienna Atomic Institute
- [El Pais](https://elpais.com/ciencia/2026-10-07/la-era-de-los-relojes-nucleares-ya-esta-aqui-el-nuevo-tictac-para-explorar-las-leyes-de-la-fisica.html) — The Age of Nuclear Clocks Is Already Here: the New Tick to Explore the Laws of Physics
- [South China Morning Post](https://scmp.com/news/china/science/article/3370006/chinas-thorium-229-nuclear-clock-beats-viennas-stability-studies-show) — China’s thorium-229 nuclear clock beats Vienna’s on stability, studies show
- [abc](https://abc.es/ciencia/reloj-atomico-muerto-larga-vida-reloj-nuclear-20261007170000-nt.html) — The Atomic Clock Is Dead: Long Live the Nuclear Clock!
- [El Mundo](https://elmundo.es/ciencia/2026/10/07/6ac65a3ee4d4d846148b45af.html) — The First Functional Nuclear Clocks Are Already a Reality: They Stabilize Themselves and Track Dark Matter Signals
- [vienna.at](https://vienna.at/erste-atomkernuhr-der-welt-laeuft-am-wiener-atominstitut/10526825) — First Atomic Nuclear Clock in the World at the Vienna Atomic Institute
- [ABC Australia](https://abc.net.au/news/science/2026-10-08/world-first-nuclear-clocks-built-most-accurate-time/107238860) — New nuclear clocks could become world's most accurate timekeepers
- [scinexx.de](https://scinexx.de/news/physik/erste-selbststabilisierende-atomkernuhr-laeuft-ueber-24-stunden) — First Self-Stabilizing Atomic Nuclear Clock Runs over 24 Hours
- [El Economista](https://eleconomista.com.mx/arteseideas/cientificos-viena-pekin-crean-primeros-relojes-nucleares-mundo-20261007-837374.html) — Scientists From Vienna and Beijing Create the World’s First Nuclear Clocks
- [Unknown](https://chosun.com/economy/tech_it/2026/10/08/FGZZQC7CNBGJFFUO2I5SU2M2M4) — Measuring Time with Atomic Nuclei… First Implementation of a ‘Nuclear Clock’
- [Reuters](https://reuters.com/science/scientists-vienna-beijing-create-worlds-first-nuclear-clocks-2026-10-07) — Scientists in Vienna and Beijing create world's first nuclear clocks
- [Nature](https://nature.com/articles/d41586-026-03060-9) — Nuclear clocks tick for the first time

## Questions

**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.

---

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