研究团队称，最新分析显示，可行的理论模型范围进一步收窄，整体上更接近当前宇宙学中广泛采 用的标准模型。 不过，仍有一个参数与观测结果不完全一致。根据早期宇宙的观测结果，标准模型和演化暗能量模 型都对后期宇宙中物质的聚集方式作出了预测，但DES对星系团的测量结果与这些预测存在差异。随着 新数据的加入，这一差异有所扩大，但其统计显著性尚未达到推翻现有标准宇宙学模型的阈值。即使将 DES数据与其他实验结果结合，这一偏差仍然存在。 研究团队表示，下一步将把DES成果与其他暗能量实验的最新约束条件结合，用于检验替代引力理 论和暗能量模型。 国际"暗能量巡天"（DES）项目团队正式发布了DES运行6年来获得的首个完整观测数据集。数据 集涵盖了DES从2013年至2019年间758个夜晚的观测，观测对象为1/8的天空。首次将相机记录的全部数 据整体对外公开，为全球物理学家研究暗能量和宇宙演化提供了重要基础。相关研究成果已提交《物理 评论D》杂志。 (责编：罗知之、陈键) 关注公众号：人民网财经 在6年的观测中，该项目利用5.7亿像素的暗能量相机（DECam）进行了深空广域巡视，记录了距离 地球数十亿光年的6.69亿个星系的 ...

国际"暗能量巡天"（DES）项目团队正式发布了DES运行6年来获得的首个完整观测数据集。数据集涵 盖了DES从2013年至2019年间758个夜晚的观测，观测对象为1/8的天空。首次将相机记录的全部数据整 体对外公开，为全球物理学家研究暗能量和宇宙演化提供了重要基础。相关研究成果已提交《物理评论 D》杂志。 自上世纪90年代末天文学家发现宇宙加速膨胀现象以来，"暗能量"便成为物理学界关注的焦点。作为一 种至今未被直接探测到且与物质极少发生相互作用的宇宙成分，暗能量的物理性质只能通过观测天体分 布与演化特征进行间接推断。DES项目正是为了应对这一挑战，旨在通过深空广域巡天观测，为揭示暗 能量的物理本质提供更精确的理论约束。 研究团队称，最新分析显示，可行的理论模型范围进一步收窄，整体上更接近当前宇宙学中广泛采用的 标准模型。 不过，仍有一个参数与观测结果不完全一致。根据早期宇宙的观测结果，标准模型和演化暗能量模型都 对后期宇宙中物质的聚集方式作出了预测，但DES对星系团的测量结果与这些预测存在差异。随着新数 据的加入，这一差异有所扩大，但其统计显著性尚未达到推翻现有标准宇宙学模型的阈值。即使将DES 数据与其他 ...

Core Findings - An international research team has published a review article in "Modern Physics Reviews," revealing that the universe may not be as uniform as previously thought, suggesting it could be "skewed" like a balloon that has been pressed on one side [1][3]. Group 1: Theoretical Implications - The discovery challenges the widely accepted "standard cosmological model," which is based on the belief that the universe should appear similar in all directions and locations, akin to a perfectly uniform cake batter [3]. - Scientists have identified a contradiction known as the "cosmic dipole anomaly," which relates to the slight temperature variations in the cosmic microwave background radiation, a remnant from the Big Bang [3][4]. Group 2: Observational Evidence - Observations of distant galaxies have shown a "skewed" distribution that does not align with the expected patterns based on the temperature variations of the cosmic microwave background, indicating a significant discrepancy [4]. - The consistency of results from various instruments, including ground-based radio telescopes and space satellites, strengthens the validity of these findings and reduces the likelihood of instrument error [4]. Group 3: Future Research Directions - Upcoming projects, such as the Euclid satellite and the Vera C. Rubin Observatory, are expected to provide clearer "cosmic panoramas," which may help resolve whether the universe is a regular sphere or has a more complex shape that is not yet understood [4].

Core Insights - The COSMOS-Web project has created the largest deep-space cosmic map to date, marking the positions, speeds, and evolutionary histories of nearly 800,000 galaxies over a time span of 13.5 billion years, covering 98% of the universe's evolution history [1][4] Group 1: Project Overview - COSMOS-Web is based on data from the James Webb Space Telescope (JWST) and represents a significant advancement in cosmic mapping, providing unprecedented insights into galaxy formation and evolution [1][3] - The project involved a total observation time of 255 hours, making it the longest single project in JWST's first year, with data exceeding 1.5TB [2] Group 2: Technological Advancements - JWST's revolutionary infrared observation capabilities distinguish it from its predecessor, the Hubble Space Telescope, allowing it to observe wavelengths from 0.6 to 28 micrometers, thus enabling the study of earlier cosmic evolution stages [3] - The larger primary mirror of JWST, approximately six times that of Hubble, enhances its light-gathering ability and sensitivity, allowing it to detect fainter and more distant celestial bodies [3] Group 3: Key Discoveries - The project revealed an unexpectedly high number of galaxies in the early universe, with actual counts being about ten times higher than predictions based on Hubble data, challenging existing cosmological models [4] - The existence of supermassive black holes in the early universe, which were thought to take billions of years to form, was also confirmed, suggesting a need to rethink the relationship between galaxies and black holes [4] - These findings pose significant challenges to current cosmological theories, indicating potential unknown physical processes or the need for fundamental revisions in understanding dark matter and early universe physics [4]