Euclid telescope finds 1.5 trillion orphan stars in Perseus cluster

space.com

Using the Euclid space telescope, scientists discovered 1.5 trillion orphan stars in the Perseus cluster, 240 million light-years away. These stars emit ghostly blue light, filling the space between galaxies. The intracluster light is 100,000 times fainter than Earth's darkest night sky. Orphan stars were found to originate from interactions with other galaxies. Euclid's findings suggest recent galaxy mergers in the cluster. The research is part of Euclid's Early Release Observations.


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