Les deux millions d'objets célestes de Desi
国际暗能量光谱仪（Desi）合作项目近日公开了其首批观测数据，涵盖近200万个天体目标。该项目致力于研究暗能量，旨在通过大规模星系光谱测绘揭示宇宙加速膨胀的机制。
此次发布的数据集包含约200万颗星系和类星体的光谱信息，是迄今最大规模的宇宙三维地图构建项目之一。Desi装置位于美国亚利桑那州基特峰天文台，配备5000根自动光纤，可同时捕捉大量天体的光谱数据。
项目科学家指出，这些数据将帮助研究人员追溯宇宙110亿年的演化历史，分析大尺度结构分布，从而限制暗能量状态方程的参数。首批数据已通过专门平台向全球天文界开放，预计将推动多篇重要研究论文的产出。
Desi项目计划在五年巡天期内测量超过3500万个星系的光谱，最终数据量将达到PB级别。此次数据发布标志着该项目正式进入科学产出阶段，为理解暗物质与暗能量的本质提供了关键观测基础。
The Dark Energy Spectroscopic Instrument (DESI) collaboration has released its first major public data set, cataloging nearly two million celestial objects. This initial release marks a significant milestone for the international project, which is designed to map the universe in unprecedented detail to study dark energy.
The data set includes precise measurements of the distances to galaxies and quasars, enabling researchers to construct three-dimensional maps of the large-scale structure of the universe. By analyzing how this structure has evolved over billions of years, scientists aim to better understand dark energy—the mysterious force driving the accelerated expansion of the cosmos.
This public release allows astronomers worldwide to access the data for their own research, potentially accelerating discoveries in cosmology and astrophysics. The DESI instrument, mounted on the Mayall Telescope in Arizona, began its five-year survey in 2021 and is expected to eventually measure the spectra of tens of millions of galaxies and quasars.
Dédiée à l’énergie noire, la collaboration internationale Desi rend public son premier lot de données : près de deux millions d’objets astrophysiques..
DESI has released its first public dataset of nearly two million astrophysical objects, a milestone for dark-energy research and large-scale astronomical data access.
DESI — international dark-energy survey collaboration, distributed across multiple research institutions.
Monitor — important for scientific data and high-performance computing, but limited direct commercial tech impact.
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