While direct evidence of multiple universes is hard to come by, indirect evidence raises intriguing possibilities.

Unruly Republic: Columnist Barton Swaim argues that Democrats' response to President Trump's attack on Iran is motivated by the Iraq war, appeasing the progressive left, but ultimately brings us back ...

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 ...

The University of Chicago welcomed representatives from two leading European institutions on Nov. 19 to mark the expansion of science collaboration into the field of particle physics and cosmology.

There's always a touch of melancholy when a chapter that has absorbed years of work comes to an end. In the case of the Atacama Cosmology Telescope (ACT), those years amount to nearly 20—and now the ...

Let's rewind the clock back…oh, I don't know, let's say a hundred years. It was 1917, and Einstein had just developed his general theory of relativity. It was a masterpiece, giving us our modern-day ...

The expansion rate of the universe may be slowing down, rather than accelerating at an ever-growing rate, a potentially groundbreaking new study has hinted. The suggestion challenges both the 2011 ...

It’s rare for a dictionary to claim that a word has no definition. But that’s what Dictionary.com said about its recently announced word of the year: “67,” pronounced “six-seven,” the slang term that ...

Here’s what you’ll learn when you read this story: A new paper adjusts an equation that defines our universe in response to recent new data. The cosmological constant, which describes how our universe ...

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 ...