With the help of a gigantic cosmic lens, astronomers have measured the magnetic field of a galaxy nearly five billion light - years away. (public.nrao.edu)
«Cosmic lens helps Hubble capture image of most distant star ever seen: Gravitational lensing by sun - like star in massive cluster reveals blue supergiant 9 billion light years away.» (sciencedaily.com)
These deep surveys using massive galaxy clusters like Abell 2744 show that looking through cosmic lenses can be an effective and useful way to study the distant Universe. (sciencedaily.com)