Star cluster UBC 63 is actually two clusters after a close flyby, Indian study finds
Researchers from Gauhati University and the Indian Institute of Astrophysics found that the open star cluster UBC 63, about 4,892 light years away, is two clusters — UBC 63A (about 21 million years old) and UBC 63B (about 562 million years old). They passed close to each other about 6 million years ago. The study used ESA’s Gaia data.
IndiaAI Mission releases home-grown foundation models EKA-1 and Dhir
The IndiaAI Mission (MeitY) released indigenous AI models on 3 November 2026. EKA-1 by Soket Labs has 26.3 billion parameters and covers all 22 Scheduled Indian languages plus English. Dhir 2B and Dhir 5B by ZenteiQ AiTech are lightweight open-source assistants that can run offline, even on mobile phones.
Exam points
EKA-1 (Soket Labs): 26.3 billion parameters, 22 Indian languages + English
24-year X-ray study finds NGC 4490 ULX-8 is a black hole feeding at the Eddington limit
Astronomers from the Indian Institute of Astrophysics (IIA) and the Raman Research Institute (RRI) studied 24 years (2000–2024) of Chandra, XMM-Newton and Swift data on the ultraluminous X-ray source ULX-8 in the galaxy pair NGC 4490/4485. The source stayed ultraluminous throughout. It is most likely a stellar-mass black hole accreting at or above the Eddington limit.
Digi Yatra starts trials for international passengers at seven airports
Digi Yatra began trials for international passengers at seven airports for November–December 2026, with a wider rollout planned for 2027. Indian nationals with e-passports get an e-passport-based Verifiable Credential in the Digi Yatra app; immigration checks stay the same. Domestically, Digi Yatra has 26.5 million+ users and runs at 39 airports.
Exam points
International trials at 7 airports, Nov–Dec 2026; rollout 2027
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