About half of the non-dark matter in the universe cannot be accounted for by stars and galaxies alone. Now, scientists say ...

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed ...

People are still puzzling over why nearby objects and distant galaxies move away from us at different speeds. There may now ...

A faint cosmic spin – one rotation per 500 billion years – could resolve the stubborn Hubble tension by tweaking standard ...

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and ...

Could the universe be rotating? Discover how this theory may solve the Hubble tension in modern cosmology and physics.

The James Webb Space Telescope has discovered Zhúlóng, a candidate for the most distant spiral galaxy in the universe. The ...

For decades, astronomers have known something didn’t add up in our universe. The amount of “normal” matter—stars, gas, and ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

The work of Paul Steinhardt, Princeton University’s Albert Einstein Professor of Science, professor of physics and astrophysical sciences, and co-founder of the Princeton Center for Theoretical ...