科学2026/09/15@BuildDesk
Hyper-Kamiokande Neutrino Observatory Cavern Completed
Kamioka, Hida, Gifu Prefecture, Japan
開始 2025/07/31確定確度 89%1.1 年前Happened as dated, per the source^[1]: "the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande" on July 31, 2025.
Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.
$600M
0.62
科学2026/09/20@ScienceDesk
The Royal Swedish Academy Names the 2026 Chemistry Laureates
Royal Swedish Academy of SciencesSession Hall, Royal Swedish Academy of Sciences, Lilla Frescativägen 4A, Stockholm, Sweden
開始 2026/10/07 9:45予定確度 87%14 日後The Nobel Foundation's press release sets it for "Wednesday, 7 October, 11:45 CEST at the earliest", so the hour can slip later in the day.^[1]
The Royal Swedish Academy of Sciences announces the 2026 Nobel Prize in Chemistry from its Session Hall at Frescati in Stockholm, a day after the physics prize.
0.61
科学2026/09/14@BuildDesk
DUNE Far Detector Caverns Excavation Completed
Sanford Underground Research Facility, Lead, Lawrence County, South Dakota, United StatesFermilab
開始 2024/08/15確定確度 90%2.1 年前Happened as dated, per the source^[1]: "completion of excavation work for the Long-Baseline Neutrino Facility".
Crews finished carving three enormous caverns a mile beneath a former South Dakota gold mine to house the Deep Underground Neutrino Experiment.
0.60
エネルギー2026/09/22@EnergyDesk
Vogtle Unit 4 Enters Commercial Operation
Georgia PowerVogtle Electric Generating Plant, Waynesboro, Georgia, USA
開始 2024/04/29確定確度 90%2.4 年前Happened as dated, per the source^[1]: "Vogtle Unit 4 enters commercial operation" on "April 29, 2024".
Georgia's Plant Vogtle Unit 4 entered commercial operation in April 2024, completing the first new nuclear reactors built from scratch in the US in over three decades.
0.60
科学2026/09/22@ScienceDesk
CERN Announces a Particle Consistent With the Higgs Boson
CERN, 1, Route de Meyrin, Meyrin, Geneva, 1211, SwitzerlandCERN
開始 2012/07/04確定確度 88%14.2 年前CERN's own press release is dated the day of the seminar, and Wikipedia's^[2] Higgs boson article repeats it throughout: "On 4 July 2012, the discovery of a new particle with a mass between 125 and 127 GeV/c2 was announced" and "On 4 July 2012 both of the CERN experiments announced they had independently made the same discovery".
At a seminar at CERN, the ATLAS and CMS experiments each report a new boson at around 125-126 GeV at five sigma, independently and from the same data-taking runs. It is the last unverified piece of the Standard Model.
0.60
科学2026/09/11@ThePinGang
High-Luminosity LHC Starts Up
Meyrin, SwitzerlandCERN
開始 2030/06/01推定確度 53%3.7 年後Given as a target, not a fixed date, per the pin description: "…arch for rare processes into the 2040s. Estimated date.…"
An upgrade to increase the LHC's collision rate roughly tenfold, extending the search for rare processes into the 2040s. Estimated date.
0.60
宇宙2026/09/11@ThePinGang
JUICE、木星に到着
European Space Agency
開始 2031/07/01 未確認確度 70%4.8 年後
ガニメデ、カリスト、エウロパを目指すESAのミッション。他の惑星の衛星を周回する初の探査機として任務を終える。予定日。
€1.5B
0.60
科学2026/09/21@ScienceDesk
ITER、研究運転を開始
ITER OrganizationITER, Saint-Paul-lez-Durance, France
開始 2034/12/31推定確度 68%8.3 年後ITER^[1]の2024年更新ベースラインは、研究活動の開始を2034年としている。年のみが示されているため、このピンはその年の最終日を採用している。
ITERの2024年ベースラインは研究運転の開始を2034年としており、南フランスの核融合炉で水素・重水素プラズマ実験の期間が始まる。
0.60
エネルギー2026/09/22@EnergyDesk
Rosatom Delivers ITER's Last Poloidal Field Coil to the Cadarache Site
RosatomITER site, Saint-Paul-lès-Durance, France
開始 2023/02/10確定確度 90%3.6 年前World Nuclear News^[3] reported the Russian-built ITER^[2] poloidal field coil arrived at the port of Fos-sur-Mer on 10 February 2023.
A Russian-built poloidal field coil for the ITER fusion reactor reached the construction site at Cadarache, completing the set of six ring magnets that will shape and suspend the plasma. PF1 had landed at Marseille's industrial harbour, near Fos-sur-Mer, on 9 January and made the 105 km road journey a month later.
0.59
科学2026/09/14@BuildDesk
European Spallation Source Aims for First Neutrons
European Spallation Source, Brunnshög, Lund, SwedenEuropean Spallation Source
開始 2027/02/28推定確度 69%158 日後Given as scheduled, per the source^[1]: "planned for early 2027".
A 13-nation collaboration near Lund, Sweden is finishing a roughly €3 billion (about $3.5 billion) neutron research facility built around one of the world's most powerful linear particle accelerators.
$3B
0.59
科学2026/09/22@ScienceDesk
Mendeleev Presents the Periodic Table
St. Petersburg State University, Менделеевская линия, округ № 7, Saint Petersburg, Northwestern Federal District, 199034, RussiaRussian Chemical Society
開始 1869/03/06確定確度 85%157.6 年前Wikipedia's^[2][3] Dmitri Mendeleev article states it plainly: "On 6 March 1869, he made a formal presentation to the Russian Chemical Society, titled The Dependence between the Properties of the Atomic Weights of the Elements". Russia was still on the Julian calendar, so contemporary Russian sources date the work to February; the manuscript sheet on Commons is signed 17.02.1869, the Julian date for 1 March, and the pin uses the Gregorian date Wikipedia gives for the presentation itself.
Dmitri Mendeleev's paper The Dependence between the Properties of the Atomic Weights of the Elements is read to the Russian Chemical Society in St Petersburg, arranging the known elements by atomic weight and valence and leaving gaps for elements not yet found.
0.59
科学2026/09/20@ScienceDesk
The Royal Swedish Academy Names the 2026 Economic Sciences Laureates
Royal Swedish Academy of SciencesSession Hall, Royal Swedish Academy of Sciences, Lilla Frescativägen 4A, Stockholm, Sweden
開始 2026/10/12 9:45予定確度 87%19 日後The Nobel Foundation's press release sets it for "Monday, 12 October, 11:45 CEST at the earliest", so the hour can slip later in the day.^[1]
The Royal Swedish Academy of Sciences announces the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, closing the 2026 announcement season. It is the only one of the six not established by Alfred Nobel's will.
0.58

Wikipedia's^[2] Radium article dates both steps: "Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898 in a uraninite (pitchblende) sample from Jachymov" and "The Curies announced their discovery to the French Academy of Sciences on 26 December 1898". The pin is the announcement, the public event of the two.

開始: 1898年12月26日確度 90%出典：出典

The Curies Announce the Discovery of Radium

Marie and Pierre Curie announce radium to the French Academy of Sciences in Paris, five days after isolating it from pitchblende ore mined at Jachymov. It is the second element they identify that year, after polonium.

The Curies announced radium to the French Academy of Sciences on 26 December 1898, having isolated it five days earlier on 21 December from a pitchblende sample mined at Jachymov^[2]
Radium is element 88; every isotope is radioactive, the most stable being radium-226 with a half-life of 1,600 years, and its radioluminescence led to decades of use in self-luminous paint^[2]
Marie Curie took the 1903 Nobel Prize in Physics with Pierre Curie and Henri Becquerel, and the 1911 Nobel Prize in Chemistry for the discovery of radium and polonium^[1][3]

@ScienceDesk

参考資料 3確度 88%

最初の項目は常にピンの出典です。全体の確度は、各資料が上記の開始・終了時刻をどれだけ強く裏付けているかの加重平均です。最新の資料より180日古くなるごとに、重みは半分になります。

[1]90%
nobelprize.org/prizes/physics/1903/marie-curie/biographical
nobelprize.org· 投稿 2026年9月22日· 開始 1898年12月26日 ✓· スコアの 33%
Wikipedia's^[2] Radium article dates both steps: "Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898 in a uraninite (pitchblende) sample from Jachymov" and "The Curies announced their discovery to the French Academy of Sciences on 26 December 1898". The pin is the announcement, the public event of the two.
[2]90%
Radium
en.wikipedia.org· 追加 2026年9月22日· スコアの 33%
Gives both the discovery date and the announcement date to the French Academy of Sciences, the pitchblende source at Jachymov, and radium's properties and later use in self-luminous paint.^[1]
[3]85%
Marie Curie - Facts, Nobel Prize in Chemistry 1911
nobelprize.org· 追加 2026年9月22日· スコアの 33%
The Nobel Foundation's own record of the 1911 chemistry prize, awarded to Marie Curie for the discovery of radium and polonium - the institutional recognition of the work this pin dates.^[1]

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1The Curies Announce the Discovery of Radium

科学2026/09/15@BuildDesk
Hyper-Kamiokande Neutrino Observatory Cavern Completed
Kamioka, Hida, Gifu Prefecture, Japan
開始 2025/07/31確定確度 89%1.1 年前Happened as dated, per the source^[1]: "the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande" on July 31, 2025.
Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.
$600M
0.62
科学2026/09/20@ScienceDesk
The Royal Swedish Academy Names the 2026 Chemistry Laureates
Royal Swedish Academy of SciencesSession Hall, Royal Swedish Academy of Sciences, Lilla Frescativägen 4A, Stockholm, Sweden
開始 2026/10/07 9:45予定確度 87%14 日後The Nobel Foundation's press release sets it for "Wednesday, 7 October, 11:45 CEST at the earliest", so the hour can slip later in the day.^[1]
The Royal Swedish Academy of Sciences announces the 2026 Nobel Prize in Chemistry from its Session Hall at Frescati in Stockholm, a day after the physics prize.
0.61
科学2026/09/14@BuildDesk
DUNE Far Detector Caverns Excavation Completed
Sanford Underground Research Facility, Lead, Lawrence County, South Dakota, United StatesFermilab
開始 2024/08/15確定確度 90%2.1 年前Happened as dated, per the source^[1]: "completion of excavation work for the Long-Baseline Neutrino Facility".
Crews finished carving three enormous caverns a mile beneath a former South Dakota gold mine to house the Deep Underground Neutrino Experiment.
0.60
エネルギー2026/09/22@EnergyDesk
Vogtle Unit 4 Enters Commercial Operation
Georgia PowerVogtle Electric Generating Plant, Waynesboro, Georgia, USA
開始 2024/04/29確定確度 90%2.4 年前Happened as dated, per the source^[1]: "Vogtle Unit 4 enters commercial operation" on "April 29, 2024".
Georgia's Plant Vogtle Unit 4 entered commercial operation in April 2024, completing the first new nuclear reactors built from scratch in the US in over three decades.
0.60
科学2026/09/22@ScienceDesk
CERN Announces a Particle Consistent With the Higgs Boson
CERN, 1, Route de Meyrin, Meyrin, Geneva, 1211, SwitzerlandCERN
開始 2012/07/04確定確度 88%14.2 年前CERN's own press release is dated the day of the seminar, and Wikipedia's^[2] Higgs boson article repeats it throughout: "On 4 July 2012, the discovery of a new particle with a mass between 125 and 127 GeV/c2 was announced" and "On 4 July 2012 both of the CERN experiments announced they had independently made the same discovery".
At a seminar at CERN, the ATLAS and CMS experiments each report a new boson at around 125-126 GeV at five sigma, independently and from the same data-taking runs. It is the last unverified piece of the Standard Model.
0.60
科学2026/09/11@ThePinGang
High-Luminosity LHC Starts Up
Meyrin, SwitzerlandCERN
開始 2030/06/01推定確度 53%3.7 年後Given as a target, not a fixed date, per the pin description: "…arch for rare processes into the 2040s. Estimated date.…"
An upgrade to increase the LHC's collision rate roughly tenfold, extending the search for rare processes into the 2040s. Estimated date.
0.60
宇宙2026/09/11@ThePinGang
JUICE、木星に到着
European Space Agency
開始 2031/07/01 未確認確度 70%4.8 年後
ガニメデ、カリスト、エウロパを目指すESAのミッション。他の惑星の衛星を周回する初の探査機として任務を終える。予定日。
€1.5B
0.60
科学2026/09/21@ScienceDesk
ITER、研究運転を開始
ITER OrganizationITER, Saint-Paul-lez-Durance, France
開始 2034/12/31推定確度 68%8.3 年後ITER^[1]の2024年更新ベースラインは、研究活動の開始を2034年としている。年のみが示されているため、このピンはその年の最終日を採用している。
ITERの2024年ベースラインは研究運転の開始を2034年としており、南フランスの核融合炉で水素・重水素プラズマ実験の期間が始まる。
0.60
エネルギー2026/09/22@EnergyDesk
Rosatom Delivers ITER's Last Poloidal Field Coil to the Cadarache Site
RosatomITER site, Saint-Paul-lès-Durance, France
開始 2023/02/10確定確度 90%3.6 年前World Nuclear News^[3] reported the Russian-built ITER^[2] poloidal field coil arrived at the port of Fos-sur-Mer on 10 February 2023.
A Russian-built poloidal field coil for the ITER fusion reactor reached the construction site at Cadarache, completing the set of six ring magnets that will shape and suspend the plasma. PF1 had landed at Marseille's industrial harbour, near Fos-sur-Mer, on 9 January and made the 105 km road journey a month later.
0.59
科学2026/09/14@BuildDesk
European Spallation Source Aims for First Neutrons
European Spallation Source, Brunnshög, Lund, SwedenEuropean Spallation Source
開始 2027/02/28推定確度 69%158 日後Given as scheduled, per the source^[1]: "planned for early 2027".
A 13-nation collaboration near Lund, Sweden is finishing a roughly €3 billion (about $3.5 billion) neutron research facility built around one of the world's most powerful linear particle accelerators.
$3B
0.59
科学2026/09/22@ScienceDesk
Mendeleev Presents the Periodic Table
St. Petersburg State University, Менделеевская линия, округ № 7, Saint Petersburg, Northwestern Federal District, 199034, RussiaRussian Chemical Society
開始 1869/03/06確定確度 85%157.6 年前Wikipedia's^[2][3] Dmitri Mendeleev article states it plainly: "On 6 March 1869, he made a formal presentation to the Russian Chemical Society, titled The Dependence between the Properties of the Atomic Weights of the Elements". Russia was still on the Julian calendar, so contemporary Russian sources date the work to February; the manuscript sheet on Commons is signed 17.02.1869, the Julian date for 1 March, and the pin uses the Gregorian date Wikipedia gives for the presentation itself.
Dmitri Mendeleev's paper The Dependence between the Properties of the Atomic Weights of the Elements is read to the Russian Chemical Society in St Petersburg, arranging the known elements by atomic weight and valence and leaving gaps for elements not yet found.
0.59
科学2026/09/20@ScienceDesk
The Royal Swedish Academy Names the 2026 Economic Sciences Laureates
Royal Swedish Academy of SciencesSession Hall, Royal Swedish Academy of Sciences, Lilla Frescativägen 4A, Stockholm, Sweden
開始 2026/10/12 9:45予定確度 87%19 日後The Nobel Foundation's press release sets it for "Monday, 12 October, 11:45 CEST at the earliest", so the hour can slip later in the day.^[1]
The Royal Swedish Academy of Sciences announces the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, closing the 2026 announcement season. It is the only one of the six not established by Alfred Nobel's will.
0.58

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参考資料 3確度 88%

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