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欧空局 Euclid 发布 DR1-Foundation 数据，覆盖 1900 平方度天空

欧空局 Euclid 望远镜发布名为 DR1-Foundation 的首批大规模数据，来自超过一年的观测，覆盖约 1900 平方度天空、记录超过十亿个天体的光，面积相当于约 9500 个满月。

This image shows Euclid's Wide Survey in light yellow and its Deep Survey in darker yellow. The Deep Survey are targeted regions within the Wide Survey. They're overlain on a star map from Gaia and a dust map from Planck. Image Credit: ESA/Euclid/Euclid Consortium/NASA; ESA/Gaia/DPAC; ESA/Planck Collaboration. Licence: CC BY-SA 3.0 IGO or ESA Standard Licence
Part of the release includes Euclid's image of the core of the Messier 81 galaxy group. This image shows part of that, centered on the Messier 81 galaxy, the group's largest member. The smaller NGC 3077 is on the left, which is also a member, as are many other small members spread across the image. Wispy blue clouds, sometimes called 'galactic cirrus clouds' are also visible. An irregular dwarf galaxy is also visible in diffuse blue to the left. Image Credit: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre and E. Bertin. Licence: CC BY-SA 3.0 IGO or ESA Standard Licence
This is Euclid's image of NGC 1291, a ring galaxy that faces us head-on. It's about 33 million light years away, and highlights Euclid's power. Image Credit: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre and E. Bertin. Licence: CC BY-SA 3.0 IGO or ESA Standard Licence
This is the Abell 3128 cluster, part of the Horologium supercluster. Horologium is home to more than 30 smaller clusters, and Abell 3128 is one of its richest members. Abell holds spirals and ellipticals, and a gravitational lens is in the middle, warping and magnifying the light from a distant background galaxy. The image shows only a fraction of Abell 3128, and also part of another galaxy cluster named ACT-CL J0330-5227; while in reality the two clusters are separated by a huge distance of around 5 billion light-years, they overlap here in our line of sight. Image Credit: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre and E. Bertin. Licence: CC BY-SA 3.0 IGO or ESA Standard Licence

来源：Universe Today · 阅读原文 · 前沿热点

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