7 October 2026
Dr. Soai Kenso, Professor Emeritus at Tokyo University of Science, was awarded the 2026 Nobel Prize in Chemistry.
Prime Minister Takaichi Sanae said in a comment that the award recognises his discoveries and research on non-linear effects and autocatalysis in asymmetric organic synthesis.
The Prime Minister telephoned Soai on 7 October 2026 to congratulate him.
The Royal Swedish Academy of Sciences announced the prize on 7 October 2026.
Soai, 76, shares it with Henri Kagan of France, 95, for the discovery of nonlinear effects and autocatalysis in asymmetric organic synthesis.
The work shows how a chemical reaction can be driven to favour one mirror-image form of a molecule, which matters for pharmaceutical manufacturing.
Japanese laureate:
Soai Kenso, 76
Institution:
Tokyo University of Science
Co-laureate:
Henri Kagan, France, 95
Announced:
7 October 2026
Why it matters for exams: Nobel laureates and their fields are asked directly every year, and Japan's science prizes are a standing Country Focus topic.
Kerala PSCUPSCSSC
In plain words
Autocatalysis Autocatalysis — A reaction in which the product itself speeds up the reaction that makes it.
Chirality Chirality — The property by which a molecule and its mirror image cannot be superimposed.
3 October 2026
The Prime Minister's Office of Japan published instructions issued by the Prime Minister at 06:40 on 3 October 2026 in response to a suspected ballistic missile launch by North Korea.
The first instruction was to dedicate maximum effort to gather and analyse information, and to provide the public with information in a timely and appropriate manner.
The second was to ensure the safety of aircraft, vessels and other assets.
The third was to take all possible measures for precaution, including readiness for contingencies.
The instructions are published in provisional English translation on the Prime Minister's Office website.
Date and time of instructions:
3 October 2026, 06:40
Number of instructions:
3
Issuing office:
Prime Minister's Office of Japan
Why it matters for exams: Japan's crisis-response machinery and its security environment in North-East Asia are standard Country Focus questions.
Kerala PSCUPSC
In plain words
Ballistic missile Ballistic missile — A missile that is powered only in its early flight and then follows a free-falling path to its target.
2 October 2026
Prime Minister Takaichi Sanae chaired the 45th meeting of Japan's Reconstruction Promotion Council at the Prime Minister's Office on 2 October 2026.
She noted that 15 years and six months have passed since the Great East Japan Earthquake and the accident at the Fukushima Daiichi Nuclear Power Station.
She said the full-scale reconstruction and revitalization of Fukushima and the reconstruction of Tohoku are top government priorities, with progress varying by area.
The present fiscal year is the first year of the third reconstruction and revitalization period, and the government will act on the Basic Guidelines on Reconstruction approved by the Cabinet in June.
She asked all Cabinet members to promote the use of reconstruction and recycled soil, and said the path beyond 2030 towards final disposal outside Fukushima Prefecture would be made more concrete.
In her closing remarks she said there will be no reconstruction of Tohoku without the reconstruction of Fukushima.
Meeting:
45th Reconstruction Promotion Council
Date:
2 October 2026
Time since the disaster:
15 years and six months
Policy period:
First year of the third reconstruction and revitalization period
Why it matters for exams: The 2011 Great East Japan Earthquake and the Fukushima Daiichi accident are recurring disaster-management questions, and this gives the live policy position.
Kerala PSCUPSC
In plain words
Tohoku Tohoku region — The north-eastern region of Japan's main island Honshu, worst hit by the 2011 earthquake and tsunami.
6 October 2026
Prime Minister Takaichi Sanae met families of abductees and others at the Prime Minister's Office on 6 October 2026.
Those present included Chairman Furuya of the Parliamentary League on the Abductions Issue, Ms. Yokota, Mr. Iizuka and Mr. Nishioka.
She thanked the group for their recent visit to the United States, where they sought help from officials, lawmakers and experts.
She said she had raised the issue in her speech to the United Nations General Assembly and with leaders she has met since taking office.
She described the matter as a humanitarian issue on which there is no time to lose, and noted that the previous day had been Megumi Yokota's birthday.
She pledged to work with the Chief Cabinet Secretary towards the return of the abductees to their homeland.
Date:
6 October 2026
Venue:
Prime Minister's Office, Tokyo
Parliamentary League chairman:
Chairman Furuya
Why it matters for exams: The abductions issue is a fixed element of Japan's policy towards North Korea and appears in questions on North-East Asian relations.
UPSC
In plain words
Chief Cabinet Secretary Chief Cabinet Secretary — The Japanese Cabinet's coordinating minister and chief government spokesperson.
2 October 2026
Prime Minister Takaichi Sanae of Japan held a meeting with Sheikh Mohammed bin Abdulrahman Al-Thani on 2 October 2026.
The meeting took place at the Prime Minister's Office in Tokyo.
The Prime Minister's Office records the visitor as the Prime Minister and Minister of Foreign Affairs of the State of Qatar, holding both offices.
The record of the meeting is published in provisional English translation on the Prime Minister's Office website.
The engagement is one of a series of leader-level meetings held by Japan in the first week of October 2026.
Date:
2 October 2026
Visitor:
Sheikh Mohammed bin Abdulrahman Al-Thani
Offices held:
Prime Minister and Minister of Foreign Affairs of Qatar
Why it matters for exams: Who holds which office in a visiting delegation is a common factual question, and Japan's West Asia engagement is examined under energy diplomacy.
UPSC
9 October 2026
The Japan Aerospace Exploration Agency plans to launch its Martian Moons eXploration spacecraft, MMX, on 20 October 2026 at 4:41:03 Japan Standard Time.
The launch vehicle is the H3 Launch Vehicle flight No. 10, from the Yoshinobu Launch Complex at the JAXA Tanegashima Space Center.
JAXA has set a reserved launch period from 21 October to 7 November 2026, and says the launch time may change within the window.
MMX is aimed chiefly at Phobos, one of the two moons of Mars, and also observes the second moon, Deimos.
The mission aims to return more than 10 g of material from Phobos to Earth, which would be the first return of samples from the Martian sphere.
It carries the IDEFIX rover, and the re-entry capsule is to be recovered in Australia in FY2031.
Planned launch:
20 October 2026, 4:41:03 JST
Launch vehicle:
H3 Launch Vehicle flight No. 10
Launch site:
Yoshinobu Launch Complex, Tanegashima Space Center
Reserved launch period:
21 October to 7 November 2026
Sample target:
More than 10 g from Phobos
Why it matters for exams: Space missions, their launch vehicles and their target bodies are asked directly, and MMX would be the first sample return from the Martian system.
Kerala PSCUPSCSSC
In plain words
MMX Martian Moons eXploration — JAXA's mission to study the moons of Mars and bring back surface material from Phobos.
JAXA Japan Aerospace Exploration Agency — Japan's national space agency.
Background
Under Japan's Constitution the Emperor is the symbol of the State and of the unity of the people and has no powers related to government.
The Diet is the highest organ of state power and the sole law-making organ of the State.
The Cabinet consists of the Prime Minister, who is its head, and other Ministers of State.
The Prime Minister is designated from among the members of the Diet by a resolution of the Diet.
Article 9 renounces war as a sovereign right of the nation. Tokyo is the national capital.
Emperor's role:
Symbol of the State
Highest organ of state power:
The Diet
War renounced in:
Article 9
Capital:
Tokyo
Why it matters for exams: The Emperor, Diet and Prime Minister as offices, and Article 9, are core Japan questions.
Kerala PSCUPSC
Background
Japan is an island country off the east coast of Asia, a string of islands in a northeast-southwest arc stretching about 1,500 miles (2,400 km).
Its four major islands are Hokkaido, Honshu, Shikoku and Kyushu.
The Sea of Japan lies to the west and the Pacific Ocean to the east; Mount Fuji is the highest peak.
Japan lies at the intersection of four tectonic plates, the Eurasian, North American, Pacific and Philippine Sea plates, and contains about 10 percent of the world's active volcanoes.
Main islands:
4
Arc length (km):
2,400
Tectonic plates meeting:
4
Share of world's active volcanoes (percent):
about 10
Why it matters for exams: Island geography, surrounding seas and seismic risk are core Japan geography questions.
Kerala PSCUPSC
Background
Japan and India concluded a separate peace treaty on 28 April 1952, marking the beginning of diplomatic relations.
The two countries have shared a Special Strategic and Global Partnership since 2014.
During the Indian Prime Minister's visit to Japan on 29-30 August 2025, they adopted the Joint Vision for the Next Decade.
They also agreed to facilitate 10 trillion yen of Japanese private investment in India over the next decade.
Peace treaty and start of diplomatic relations:
28 April 1952
Special Strategic and Global Partnership since:
2014
Joint Vision for the Next Decade adopted:
29-30 August 2025
Japanese private investment to be facilitated (trillion yen):
10
Why it matters for exams: Dates of establishing relations and the level of partnership are the standard questions on a country's ties with India.
Kerala PSCUPSC
Background
The Constitution of Japan was promulgated on November 3, 1946. Chapter II of the Constitution is headed Renunciation of War and contains only Article 9. Article 9 states that the Japanese people forever renounce war as a sovereign right of the nation and the threat or use of force as means of settling international disputes. Its second paragraph adds that land, sea, and air forces, as well as other war potential, will never be maintained, and that the right of belligerency of the state will not be recognized. Article 100 provides that the Constitution be enforced from the day when the period of six months will have elapsed counting from the day of its promulgation. Article 96 requires an amendment to be initiated by the Diet through a concurring vote of two-thirds or more of all the members of each House, and then ratified by an affirmative vote of a majority of all votes cast at a special referendum or at an election the Diet specifies. An amendment so ratified is promulgated by the Emperor in the name of the people as an integral part of the Constitution. Chapter X of the Constitution is headed Supreme Law.
Promulgated:
November 3, 1946
Enforcement (Article 100):
Six months after the day of promulgation
Chapter containing Article 9:
Chapter II, Renunciation of War
Amendment: vote in each House:
Two-thirds or more of all the members
Amendment: final step:
Majority of all votes cast at a referendum
Why it matters for exams: The renunciation of war clause is the single most asked fact about Japan's Constitution, and the amendment procedure under Article 96 is a standard comparison with India's Article 368.
Kerala PSCUPSCSSC
Background
The Diet consists of two Houses, the House of Representatives and the House of Councillors, each composed of elected Members who represent all the people. The House of Representatives has 465 members with a term of office of 4 years, and that term ends with the dissolution of the House. The House of Councillors has 248 members with a term of office of 6 years, with half of the Members elected every third year. Dissolution is possible for the House of Representatives and not possible for the House of Councillors. In the House of Representatives 289 members are returned from single-seat constituencies and 176 by proportional representation. In the House of Councillors 148 members are returned from plural-seat prefectural constituencies and 100 by proportional representation. The right to vote for both Houses rests with citizens 18 years of age or older, while the right to stand for office is citizens 25 years of age or older for the House of Representatives and citizens 30 years of age or older for the House of Councillors. Each House also has a Commission on the Constitution, a Board of Oversight and Review of Specially Designated Secrets, and a Deliberative Council on Political Ethics.
House of Representatives: number of members:
465
House of Representatives: term of office:
4 years
House of Councillors: number of members:
248
House of Councillors: term of office:
6 years, with half of the Members elected every third year
House of Representatives constituencies:
Single-seat constituency: 289; Proportional representation: 176
House of Councillors constituencies:
Plural-seat prefectural constituency: 148; Proportional representation: 100
Right to stand for office:
Citizens 25 years of age or older (Representatives); citizens 30 years of age or older (Councillors)
Why it matters for exams: The size, term and election method of the two Houses of a foreign legislature is the commonest Country Focus question, and Japan's staggered six-year upper House is a standard contrast with the Rajya Sabha.
Kerala PSCUPSCSSC
Background
The Government of Japan gives the country's capital as Tokyo and its currency as the Japanese Yen, which is issued by the Bank of Japan. Japan is located west of the Pacific Ocean in the Northern Hemisphere, and its neighbors include the Republic of Korea, China and Russia. Its land area is 377,974.87 square kilometers as recorded by the Geospatial Information Authority of Japan, and the country is divided into 47 prefectures. The administration comprises the Prime Minister's Office of Japan, the Cabinet Secretariat and 14 ministries and agencies. The judiciary consists of the Supreme Court, High Courts, District Courts, Summary Courts, and Family Courts. The national flag is the Nisshoki, also known as the Hinomaru, and the national anthem is Kimi ga Yo. The main industries are automobiles, consumer electronics, computers and other electronics.
Capital:
Tokyo
Currency:
Japanese Yen
Currency issued by:
Bank of Japan
Land area:
377,974.87 square kilometers
Number of prefectures:
47
Neighbors:
Republic of Korea, China and Russia
National flag and anthem:
Nisshoki, also known as Hinomaru; Kimi ga Yo
Why it matters for exams: Capital, currency, land area and neighbours are the first facts asked about any country in general knowledge papers, and the issuing authority of the Japanese Yen is a standard banking-exam question.
Kerala PSCUPSCSSCBank