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

Dark energy, the mysterious force that's driving the accelerating expansion of the universe ... apparent acceleration could be a byproduct of cosmic structures like voids — vast, near-empty ...

Dark energy is still a mystery, but powerful new telescopes are set to uncover clues. With NASA and ESA leading the charge, ...

Featuring the world’s largest digital camera, the Vera C. Rubin Observatory will capture these mysterious phenomena in more ...

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

The Vera C. Rubin Observatory is set to revolutionize our understanding of the cosmos by detecting millions of exploding ...

A new study proposes a way to use weak gravitational lensing data to test the long-held Cosmological Principle of the ...

Euclid, the European Space Agency's dark Universe detective, has made an astonishing discovery -- right in our cosmic backyard.

The true nature of dark matter is still one of the greatest mysteries in contemporary physics, even though scientists have ...

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