A novel theory suggests that the current expansion rate of the universe is not fixed, but was in fact quite different in the ...

"Cosmic archaeologists" have discovered an iron-deficient second-generation star, which provides evidence of how ancient ...

Light released by a distant star does not simply wink out after crossing some threshold of space. In a vacuum, photons keep ...

The night sky appears perfectly still, but the universe is constantly changing in ways the human eye cannot see. By combining ...

A new study suggests that "little red dots" spied by the James Webb telescope could be the universe's short-lived first ...

Dimensions beyond the four we’re familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane ...

Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...

Astronomers have uncovered a hidden cosmic web of galaxies and gas by mapping hydrogen light from the early universe.

A new three-volume study explores how quantum physics, gravitation and cosmology may be understood within a unified ...

Chris Impey has received funding from NASA, NSF, Howard Hughes Medical Institute, and the Templeton Foundation. If you look across space with a telescope, you’ll see countless galaxies, most of which ...