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Quasar. Creator: NASAQuasar. A quasar is a very bright object in space that is similar to a star and very far away from Earth. A quasar gives off powerful radio waves
Gravitation lens G2237+0305. Einstein Cross quasar. A gravitational lens occurs when light from a very distant, bright source (such as a quasar) is bent around a massive object (such as a galaxy)