Einstein rings help scientists study dark matter and cosmic expansion. Euclid will find thousands more lenses to map the ...

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

A rare ring of light surrounding a galaxy nearly 590 million light-years away from Earth has been discovered by a space ...

The Einstein ring was found surrounding the galaxy NGC 6505, located a relatively close 590 million light-years from Earth.

Here’s how it works. Space can be a wondrous place, and we've got the pictures to prove it! Take a look at our favorite space pictures here, and if you're wondering what happened to today in ...