Current affairs
News for UPSC, SSC and defence exams, with the reason it matters.
2026 Nobel Prize in Physiology or Medicine goes to Deisseroth, Hegemann and Nagel for optogenetics
- On 5 October 2026, the Nobel Prize in Physiology or Medicine was awarded to Karl Deisseroth, Peter Hegemann and Georg Nagel.
- It honours their discoveries on light-gated ion channels and optogenetics.
- Hegemann and Nagel found channelrhodopsin, a light-sensitive protein, in the single-celled alga Chlamydomonas.
Why it matters
[Milestone] Optogenetics lets scientists turn chosen nerve cells on or off with light. Older methods could map brain areas but could not prove cause and effect. Now researchers can link specific circuits to memories, feelings and behaviour. Doctors are testing the method to restore sight in people with visual impairment. Nobel prizes are a regular GK question in SSC, CDS and NDA papers.
Asian Games 2026: India wins 85 medals; both hockey teams take gold and qualify for LA 2028
- India won 85 medals at the 2026 Asian Games in Japan: 21 gold, 27 silver and 37 bronze.
- That is down from 106 medals at the previous edition in Hangzhou.
- India's men's and women's hockey teams both won gold, securing direct berths at the 2028 Los Angeles Olympics.
Why it matters
[First] The women's hockey team beat China 1-0 for India's first Asian Games women's hockey gold since 1982 (Indian Express). Asian Games hockey champions qualify directly for the next Olympics. As of 3 October 2026, India was fourth on the medal table. It was level with Uzbekistan on 21 golds, ahead on silvers. Equestrian events on 4 October could still change that order.
India retains Gaprindashvili Trophy at 46th Chess Olympiad in Samarkand
- The 46th Chess Olympiad was held in Samarkand, Uzbekistan, from 15 to 27 September 2026.
- India won silver in the Open section on tie-break; hosts Uzbekistan took gold.
- India's women won bronze; China won the women's gold.
Why it matters
[Data] The Gaprindashvili Trophy goes to the best nation across both sections combined. India also won it in 2022 at home and in 2024 in Budapest, where it took double gold. Olympiad hosts, winners and India's medals are common sports questions.
India stays 131st of 145 on WEF Global Gender Gap Index 2026
- On 16 September 2026, the World Economic Forum released the Global Gender Gap Index 2026.
- India stayed 131st of 145 countries, with 64.5% of its gender gap closed.
- Iceland, Finland and Norway took the top three places. Chad came last.
Why it matters
[Data] India's score improved slightly, but its rank did not move. Its weakest area is economic participation, at 41.2% parity. The WEF says full global parity is still 120 years away.
Asked before: UPSC Prelims 2017 asked which body publishes the Global Gender Gap Index.
IAF’s first Dronathon-2026 begins at Pokhran Field Firing Range, Jaisalmer
- The Indian Air Force held its first Dronathon-2026 at the Pokhran Field Firing Range in Jaisalmer.
- It was a three-day event for Indian makers of drones and anti-drone systems.
- Vice Chief of the Air Staff Air Marshal Ashutosh Dixit opened it.
Why it matters
[Defence] The event backs Atmanirbhar Bharat in unmanned systems. It looked at drones and counter-drone tools, not fighter jets or missiles.
DAC clears ₹1.10 lakh crore of defence purchases, 98% from Indian industry
- On 7 September 2026, the DAC gave Acceptance of Necessity to proposals worth ₹1.10 lakh crore.
- About 98% of the purchases are planned from Indian industry.
- Army items include CBRN reconnaissance vehicles, advanced light helicopters and the Sarvatra Bridge System.
Why it matters
[Data] The DAC, chaired by the Defence Minister, clears capital purchases for the forces. Acceptance of Necessity is the first step in a purchase. The 98% domestic share shows the indigenisation push. Indian marine gas turbines would cut reliance on foreign engine makers.
GSLV-F17 launches EOS-05, India’s first imaging satellite for geosynchronous orbit
- On 4 September 2026, GSLV-F17 launched the 2,367-kg EOS-05 satellite from Sriharikota.
- EOS-05 is India's first imaging satellite designed to watch Earth from geosynchronous orbit, about 36,000 km up.
- It is the heaviest satellite a GSLV has launched so far.
Why it matters
[First] A satellite in geosynchronous orbit can keep watching the same region. That helps disaster management, farming and strategic monitoring. Most imaging satellites fly in low orbits and pass over an area only now and then.
Shakti Sharma becomes first non-medical woman officer to reach Air Vice Marshal rank
- On 1 September 2026, Shakti Sharma became the first non-medical woman officer to reach Air Vice Marshal rank.
- The first counts all three armed forces, including equivalent ranks in the Army and Navy.
- She took charge as Assistant Chief of the Air Staff (Education) at Air Headquarters.
Why it matters
[First] Women had reached this level before only through the medical branch. Air Vice Marshal equals Major General in the Army and Rear Admiral in the Navy. Defence exams often ask about women's firsts in the forces.
Centre notifies Legal Metrology (IST) Rules, 2026, making IST the single legal time reference
- The Consumer Affairs Ministry notified the Legal Metrology (Indian Standard Time) Rules, 2026 on 27 August.
- IST becomes the single reference for legal, official and commercial purposes.
- The rules come into force 180 days after publication in the Gazette.
Why it matters
[Policy] This is part of the 'One Nation, One Time' push. Banking, telecom, power grids and railways need exact, synced time stamps.
Asked before: CDS (I) 2021 asked which longitude is the standard meridian of India.
Amit Shah presents the President’s Colours to Puducherry Police
- Union Home Minister Amit Shah presented the President's Colours to Puducherry Police on 9 August 2026.
- Lieutenant Governor K. Kailashnathan and Chief Minister N. Rangasamy attended the ceremony.
- Puducherry Police now joins the forces that hold this honour.
Why it matters
[Security] The President's Colours, or Nishaan, is the highest honour for a military unit or police force. The Indian Navy was the first to receive it, in 1951.
Agni-4 medium-range ballistic missile successfully test-fired from Chandipur
- India test-fired the Agni-4 missile on 6 August 2026.
- The launch took place at the Integrated Test Range, Chandipur, Odisha.
- The Strategic Forces Command carried out the test.
Why it matters
[Security] Agni-4 is a nuclear-capable missile with a range of about 4,000 km. It is a two-stage, solid-fuel, road-mobile missile. The Strategic Forces Command manages India's nuclear arsenal.
Astrophysicist Annapurni Subramaniam becomes first Indian woman to win COSPAR Vikram Sarabhai Medal
- Annapurni Subramaniam received the COSPAR Vikram Sarabhai Medal 2026 on 3 August in Florence, Italy.
- She got it at the 46th COSPAR General Assembly.
- She is the fourth Indian and first Indian woman to win it.
Why it matters
[First] ISRO and COSPAR give this medal every two years. It honours space research in developing countries. Earlier Indian winners include U.R. Rao and Anil Bhardwaj.
Skyroot’s Vikram-1 becomes India’s first privately built rocket to reach orbit
- Skyroot Aerospace launched Vikram-1 on 18 July 2026 from Satish Dhawan Space Centre, Sriharikota.
- The mission was named 'Aagaman'. The rocket placed its payloads in a 450 km low-Earth orbit.
- It carried Skyroot's own SCOPE satellite and customer payloads from Grahaa Space, Cosmoserve and DCubed.
Why it matters
[Science] Skyroot, based in Hyderabad, was founded in 2018 by two former ISRO engineers. The 2020 space reforms opened rocket launches to private firms. Its suborbital Vikram-S flew in November 2022.
PM Modi flags off India’s first hydrogen-powered train on Jind–Sonipat route in Haryana
- PM Narendra Modi flagged off the train at Jind railway station, Haryana, on 17 July 2026.
- It runs on the 89 km Jind–Gohana–Sonipat section of Northern Railway.
- The train has two power cars and eight passenger cars. It can carry about 2,600 passengers.
Why it matters
[Science] A hydrogen fuel cell makes electricity from hydrogen and oxygen. Its only exhaust is water vapour. Such trains suit routes that have no overhead electric lines.
Cabinet approves Semicon 2.0 with ₹1,27,500 crore outlay for chip design and manufacturing
- The Union Cabinet approved Semicon 2.0 on 15 July 2026. Its outlay is ₹1,27,500 crore.
- It covers six areas: chip design, equipment and materials, fabs, assembly and packaging, R&D, and workforce training.
- Under Semicon 1.0, 12 manufacturing units were approved, with ₹1.64 lakh crore of investment.
Why it matters
[Economy] Semicon 1.0 was the India Semiconductor Mission, launched in 2021 with ₹76,000 crore. Semicon 2.0 moves beyond building plants to equipment, materials and design.
INS Mahendragiri, sixth Project 17A stealth frigate, commissioned at Visakhapatnam
- Defence Minister Rajnath Singh commissioned INS Mahendragiri at Visakhapatnam on 11 July 2026.
- It is the sixth Project 17A stealth frigate and joins the Eastern Fleet.
- Over 75% of its content is indigenous.
Why it matters
[Science and Technology] Project 17A frigates follow the Shivalik class (Project 17). The ships are named after Indian hill ranges.