An Einstein Cross spotted in space: 'Flower with four petals' | Technology News - The Indian Express
Damian Peach on X: "Einstein's Cross. https://t.co/faqkWw6BAi Distant quasar Q2237+030 sits directly behind galaxy PGC69457 creating four images of the background quasar due to strong gravitational lensing. The quasar is 8 billion