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A person holds a pink video game controller in their hands.AI · Nov 4, 2026Genie 4: changing a world live puts consistency to the testGoogle is adding live instructions and sound to its generated worlds. To understand what Genie 4 offers, it is important to distinguish between a convincing setting, a useful prototype and a verifiable simulation.Three people discuss in front of a mathematical blackboard, illustrative photograph.AI · Nov 1, 2026OpenAI and Yang–Mills: understanding the announcement without confusing the evidenceOpenAI claims to have proved existence in quantum physics. The Yang–Mills problem also requires a mass gap: here are the key distinctions for understanding the announcement.Artist’s impression of TOI-561 b and its atmosphere above an ocean of magma; illustration published in 2025.Space · Nov 1, 2026TOI-561 b: how Webb is investigating the clouds of a lava planetA study of infrared variations from TOI-561 b favours a highly reflective atmosphere. Here is what Webb is actually measuring, what the models explain and what remains to be verified.Mechanical electricity meter, photograph for illustrative purposes, 2015.Politics · Nov 1, 2026Energy support in 2027: two timelines for households in LuxembourgThe 29 October agreement extends support for electricity and heating throughout 2027. The discount on petrol and diesel will end in late February. Amounts, conditions and disagreements: what the signed text provides for.Detail of the sky in Vincent van Gogh’s The Starry Night, 1889: Moon, stars and blue swirls.Visual arts · Oct 27, 2026The Starry Night: when astronomers reread Van Gogh’s skyVenus, a crescent Moon and a group of stars: astronomers have searched the sky painted by Van Gogh for positions comparable to those in a real sky.The blue Earth stands out above the Moon’s grey terrain.Space · Oct 26, 2026The Moon’s formation: what an assembly in a few hours meansSimulations can form a satellite directly after an impact. The 2026 research sheds light on the role of heat and the strength of rocks, without proving a single scenario.The Sûre in flood at Diekirch on 15 July 2021, archive photographClimate · Oct 21, 2026Flooding: preparing for autumn in LuxembourgThe inondations.lu portal has been revamped after a dry summer. Forecasts, maps and building protection address different needs.Grand Auditorium of the Philharmonie Luxembourg, viewed from the stage, 2022 archiveMusic · Oct 20, 2026The Philharmonie: a space to listen toMovable reflectors, box towers and the presence of the audience: design archives shed light on the acoustic choices behind Luxembourg’s concert hall.The LEIR accelerator at CERN, photographed on 15 March 2014AI · Oct 2, 2026Three AI challenges for acceleratorsFaster simulation, anomaly detection and help with tuning: a scientific hackathon announced for 11 to 16 October will put several AI approaches to the test.The Nahe at its confluence with the Rhine during low water on 7 August 2022Climate · Oct 2, 2026Fresh water: reserves are dwindlingThe WMO’s 2025 global assessment describes river flows that are often below normal and a sustained decline in reserves. Two phenomena that should be distinguished.Jann Mardenborough and competitors on simulators at GT Academy in the UK in 2013Motorsport · Oct 2, 2026Sim racing: final in LuxembourgThe FIA has announced that its European virtual hill climb final will be held in Luxembourg from 9 to 11 October. Eight places are available following qualifying on RaceRoom.