Copernical Team
Reading a quantum clock costs more energy than running it, study finds
A study led by the University of Oxford has identified a surprising source of entropy in quantum timekeeping - the act of measurement itself. In a study published 14 Nov in Physical Review Letters, scientists demonstrate that the energy cost of reading a quantum clock far outweighs the cost of running it, with implications for the design of future quantum technologies.
Clocks, whether pend Chandrayaan-3 lunar mission achieves key flyby milestones
Chandrayaan-3 was developed to demonstrate the capability for a controlled lunar landing, enable rover mobility on the Moon, and facilitate in-situ research. The mission includes a lander module, propulsion module, and rover. The satellite launched aboard LVM3 from SDSC SHAR, Sriharikota, on July 14, 2023.
Following its lunar touchdown on August 23, 2023, the propulsion module maintained l ESA pinpoints 3I/ATLAS's path with data from Mars
Since comet 3I/ATLAS, the third known interstellar object, was discovered on 1 July 2025, astronomers worldwide have worked to predict its trajectory. ESA has now improved the comet's predicted location by a factor of 10, thanks to the innovative use of observation data from our ExoMars Trace Gas Orbiter (TGO) spacecraft orbiting Mars.
By being able to use Mars-based data for an unusual ob Image: A robotic helping hand at the ISS
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Two arrangements mark a new step for Ariane 6 and Vega-C exploitation
Sentinel-6B rolls out to the launch pad
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Sentinel-6B rolls out to the launch pad Week in images: 10-14 November 2025
Week in images: 10-14 November 2025
Discover our week through the lens
Twin Mars orbiters launched on New Glenn rocket to study Martian atmosphere
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Chinese astronauts return from space station after delay blamed on space debris damage
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CSES satellite tracks shifting South Atlantic anomaly and impact on solar cycle twenty five
The South Atlantic anomaly represents the region of Earth's radiation belts with the highest particle concentrations and weakest geomagnetic shielding. This area poses risks to the electronics aboard low-Earth orbit satellites and to the health of astronauts.
Researchers from the Institute of High Energy Physics of the Chinese Academy of Sciences, together with the National Institute of Na