For a quarter century, cosmology has rested on a simple but audacious idea: that a fixed “cosmological constant” drives the ...

Nuclear fusion. People on Mars. Artificial general intelligence. These are just some of the advances that could come by the ...

A new study questions dark energy's role in the universe's acceleration, suggesting it may be weakening instead.

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 ...

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 ...

The statue at Fan Zhongyan’s tomb site in Yichuan County, Henan. In 1043, Fan’s Ten-Point Memorial proposed civil, military, and educational reforms not simply as policy corrections, but as acts of ...

It all started with a big bang has been the commonly accepted origin story of our universe for decades. But what if it’s wrong? What if, before starting 13 billion years ago as a tiny ball of ...

Is the universe really uniform? A recent study published in the Journal of Cosmology and Astroparticle Physics (JCAP) explores this fundamental question using an innovative technique based on the ...

Comparing composite models for multi-component observational data is a prevalent scientific challenge. When fitting composite models, there exists the potential for systematics from a poor fit of one ...

About a year after launching into orbit around the Sun, the James Webb Space Telescope began imaging an abundance of little red dots, which scientists called, um, “little red dots.” I know—not only is ...