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Giant Comet Found in Outer Solar System by Dark Energy Survey

Giant Comet Found in Outer Solar System by Dark Energy Survey Estimated to be 100–200 kilometers across, the unusual wandering body will make its closest approach to the Sun in 2031 Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA/P. Bernardinelli Array G. Bernstein (UPenn)/DESI Legacy Imaging Surveys. Music by Zero-project :Through the Looking Glass (zero-project.gr) Acknowledgments: T.A. Rector, M. Zamani & J. Miller Zooming on Comet Bernardinelli-Bernstein. This zoom shows an image from the Dark Energy Survey (DES) composed of some of the discovery exposures showing Comet Bernardinelli-Bernstein collected by the 570-megapixel Dark Energy Camera (DECam) mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO) in Chile.

Dark matter mapped using light from 100 million galaxies

Researchers have created the largest ever map of dark matter, invisible material thought to account for 80% of the total matter of the universe. As matter curves space-time, astronomers are able to map its existence by looking at light travelling to Earth from distant galaxies. If the light has been distorted, this means there is matter in the foreground, bending the light as it comes towards us. A team co-led by UCL researchers, as part of the international Dark Energy Survey (DES), used artificial intelligence to analyse images of 100 million galaxies, looking at their shape, spots of light made up of 10 or so pixels, to see if they have been stretched.

Dark energy survey releases most precise look at the universe s evolution

In 29 new scientific papers, the Dark Energy Survey examines the largest-ever maps of galaxy distribution and shapes, extending more than 7 billion light-years across the Universe. The extraordinarily precise analysis, which includes data from the survey s first three years, contributes to the most powerful test of the current best model of the Universe, the standard cosmological model. However, hints remain from earlier DES data and other experiments that matter in the Universe today is a few percent less clumpy than predicted.

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