In Euclid's image of an Einstein ring around galaxy NGC 6505, the ring's light comes from a background galaxy 4.42 billion light-years from Earth.
Sources
- Astronomers just found a new treasure trove of galaxies (nationalgeographic.com)
- https://www.esa.int/Science_Exploration/Space_Science/Euclid/Euclid_discovers_a_stunning_Einstein_ring (esa.int)
- https://www.jpl.nasa.gov/news/euclid-discovers-einstein-ring-in-our-cosmic-backyard/ (jpl.nasa.gov)
- https://arxiv.org/abs/2502.06505 (arxiv.org)
- https://www.popsci.com/science/einstein-ring/ (popsci.com)
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