为了解开宇宙加速膨胀与暗能量的谜团，位于亚利桑那州索诺兰沙漠的暗能量光谱巡天仪（DESI）历经五年观测，成功绘制出史上最大规模的三维宇宙地图。该地图涵盖全天空约75%的区域，包含5.6兆像素与约40亿个天体，并结合可见光与近红外波段；透过最新发布的DESI遗产巡天成像工具，公众也能在线自由探索这个庞大的宇宙观测成果。

DESI利用5,000具机械眼瞄准银河系盘面上方与下方，有效避开银河尘埃阻挡以捕捉清晰的深空天体，其成果凝聚了160多位科学家的长期心血，并已衍生出超过1,800篇学术论文。先前公布的成果重构了过去110亿年的宇宙历史，且前三年的观测数据结合超新星研究显示，暗能量可能并非恒定不变，而是随著时间推移逐渐减弱，颠覆了过往对宇宙膨胀的认知。

DESI完整的五年数据分析预计于2027年正式发布，将更清晰描绘宇宙的演变历程，并为NASA罗曼太空望远镜等未来天文项目提供关键比对基准。此外，天文学家计划导入人工智慧工具来加速处理海量的拍位元组级天文数据，进一步探寻暗能量本质并持续拓展人类对浩瀚宇宙扩张史的理解。

To solve the mystery of cosmic accelerated expansion and dark energy, the Dark Energy Spectroscopic Instrument (DESI) in Arizona's Sonoran Desert has spent five years mapping the cosmos, producing the largest 3D universe map to date. Covering roughly 75 percent of the sky, the survey captures 5.6 trillion pixels across approximately 4 billion celestial objects in visible and near-infrared light, and the newly released DESI Legacy Imaging Surveys viewer now allows the public to explore this vast cosmic data online.

By aiming its 5,000 mechanical eyes out of the top and bottom of the Milky Way, DESI avoids obscuring galactic dust to record exceptionally clear views of distant space, drawing on foundational work by over 160 researchers and contributing to more than 1,800 scientific papers. The project has mapped cosmic history across 11 billion years, and data from its first three years suggest that dark energy might not be constant, but could instead be gradually weakening over time.

A comprehensive analysis of the full five-year dataset is scheduled for release in 2027, promising a more vivid reconstruction of the universe's past and present while serving as a vital baseline for future initiatives like NASA's Nancy Grace Roman Space Telescope. Researchers also plan to train artificial intelligence models to expedite the processing of petabyte-scale astronomical data, unlocking new discoveries about cosmic expansion and galaxy evolution.