"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

The Euclid space telescope has captured an Einstein ring, a rare and spectacular phenomenon, around the galaxy NGC 6505. This unprecedented observation opens new perspectives for studying dark ...

Einstein rings occur when light from a distant galaxy bends to form a glowing ring around another object in the foreground as that object is being observed. The rarely observed rings are named for ...

In 2007, astronomers discovered the Cosmic Horseshoe, a gravitationally lensed system of galaxies about 5.5 billion ...

“Even from that first observation, I could see it, but after Euclid made more observations of the area, we could see a perfect Einstein ring. For me, with a lifelong interest in gravitational ...

When the test images were sent back to Earth, Euclid Archive Scientist Bruno Altieri spied what appeared to be an Einstein ring. Einstein rings occur when light from a distant galaxy bends to form ...