Neutron sources can be directly identified from measured spectra rather than proxies using inference tools adapted from ...

One of the most basic and accepted truths about the universe is that it’s pretty much the same everywhere you look. In other ...

Physicists propose that a mysterious force known as early dark energy could solve two of the biggest puzzles in cosmology and fill in some major gaps in our understanding of how the early universe ...

David H. DeVorkin is emeritus senior curator in the history of astronomy and the space sciences at the National Air and Space Museum, Smithsonian Institution, Washington DC. What is the Universe?

The conclusion of DESI's first survey marks an important milestone for cosmology, which finds itself in a bind for the best reasons. Reading time 5 minutes Last week, the Dark Energy Spectroscopy ...

Last year, cosmologists working on the Dark Energy Spectroscopic Instrument (DESI) reported hints that the mysterious dark energy thought to be driving the expansion of the universe may be weakening ...

The Atacama Cosmology Telescope in Chile not only confirmed one of the greatest mysteries in the universe—it also ruled out dozens of models that attempted to solve it. Reading time 3 minutes The ...

Three papers published in JCAP presenting the sixth and final data release of the Atacama Cosmology Telescope offer a new map of the “infant” Universe, confirm the “Hubble tension,” and rule out a set ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The expansion rate of the universe may be slowing down, rather than ...

To study the origins of our universe is to struggle with profound chicken-or-egg questions. We know the Big Bang happened. Cosmologists can see its afterglow in the sky. But no one knows whether the ...