Le CEA et le satellite Euclid pour explorer la matière et l’énergie noires de l’Univers
2023年7月1日，欧洲空间局（ESA）的欧几里得（Euclid）空间望远镜将由美国SpaceX公司的猎鹰9号火箭，从佛罗里达州卡纳维拉尔角发射升空。该任务的核心目标是以前所未有的精度绘制宇宙大尺度结构，以探索暗物质和暗能量——这两种成分共同构成了宇宙总质能的大约95%，但其本质仍是现代物理学最大的谜团之一。
法国原子能与替代能源委员会（CEA）作为欧几里得任务的关键参与者，深度贡献于卫星的两个核心科学仪器：可见光成像仪（VIS）和近红外光谱光度计（NISP）。VIS将提供极高分辨率的可见光图像，用于精确测量数十亿星系的形状，通过弱引力透镜效应探测暗物质的分布。NISP则将在近红外波段工作，通过测量星系的红移来构建宇宙的三维地图，并研究宇宙的膨胀历史，从而揭示暗能量的性质。
除了仪器硬件，CEA还参与了任务地面段系统的开发，包括数据处理管道和科学分析软件的构建。欧几里得任务预计将进行为期六年的观测，产生海量数据，有望为理解宇宙的组成和演化带来革命性突破。
The European Space Agency's Euclid space telescope is scheduled for launch aboard a SpaceX Falcon 9 rocket from Cape Canaveral, Florida, on July 1, 2023. Its primary mission is to investigate the nature of dark matter and dark energy, which together constitute about 95% of the universe's total mass-energy content but remain poorly understood.
France's Atomic Energy and Alternative Energies Commission (CEA) has played a significant role in the mission's development. The agency contributed to both of Euclid's core scientific instruments: the VISible instrument (VIS), a high-resolution optical imaging camera, and the Near-Infrared Spectrometer and Photometer (NISP). Additionally, the CEA was involved in developing the ground segment of the mission, which includes the data processing and analysis infrastructure essential for interpreting the vast datasets Euclid will generate.
Le 1er juillet 2023, le télescope spatial Euclid sera lancé par une fusée Falcon 9 depuis la base de lancement de Cape Canaveral en Floride, aux Etats-Unis. Le CEA a participé aux deux instruments à bord du satellite : VIS, la caméra imageant dans le visible et NISP, spectrophotomètre en infrarouge, mais aussi au développement de la partie segment sol de la mission.
The CEA helped develop key instruments and ground systems for ESA’s Euclid space telescope, which will study dark matter and dark energy, making this a notable European space-science and advanced instrumentation milestone.
CEA — French public research organization focused on energy, defense, and advanced technologies; based in France.
Euclid / ESA — European space telescope mission and space agency; based in Europe.
SpaceX — Launch provider for Euclid’s Falcon 9 launch; based in the United States.
Monitor — important for European space tech and scientific instrumentation, but limited immediate commercial impact.