后发座星系团
一张满是模糊黄色斑点的图片呈现在眼前。所有黄色斑点都是星系，其中大多数是后发座星系团的成员。两个明亮的蓝点是我们银河系中的前景恒星。有关更多详细信息，请参阅说明。
欧几里得太空望远镜的英仙座星系团
2023年11月8日 Perseus Galaxy Cluster from Euclid Image Credit & License: ESA, Euclid, Euclid Consortium, NASA; Processing: Jean-Charles Cuillandre (CEA Paris-Saclay) & Giovanni Anselmi; Text: Jean-Charles Cuillandre Explanation: There’s a new space telescope in the sky: Euclid. Equipped with two large panoramic cameras, Euclid captures light from the visible to the near-infrared. It took five hours of observing for Euclid’s 1.2-meter diameter primary mirror to capture, through its sharp optics, the 1000+ galaxies in the Perseus cluster, which lies 250 million light years away. More than 100,000 galaxies are visible in the background, some as far away as 10 billion light years. The revolutionary nature of Euclid lies in the combination of its wide field of view (twice the area of the full moon), its high…