The universe is expanding, but astronomers still cannot agree on exactly how fast. That mismatch, known as the Hubble tension ...

"It means cleaning house, narrowing the viable paths forward, and no longer spending energy on what are evidently dead ends." ...

The Atacama Cosmology Telescope in Chile not only confirmed one of the greatest mysteries in the universe—it also ruled out ...

For the past few years, a series of controversies have rocked the well-established field of cosmology. In a nutshell, the predictions of the standard model of the universe appear to be at odds with ...

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 ...

UChicago physics Prof. Bonnie Fleming, who is also the chief research officer at Fermi National Accelerator Laboratory, is the new IRL’s deputy director. Visiting scholar Cédric Cerna will serve as ...

A cosmic mystery that is one of the most significant open questions in physics may finally have been solved. The two main methods of measuring the universe’s rate of expansion have long been in ...

Clusters of hundreds or thousands of galaxies sit at the intersections of giant, crisscrossing filaments of matter that form the tapestry of the cosmos. As gravity pulls everything in each galaxy ...

The cracks in cosmology were supposed to take a while to appear. But when the James Webb Space Telescope (JWST) opened its lens last spring, extremely distant yet very bright galaxies immediately ...

When Japanese astronaut Kimiya Yui heads to the International Space Station (ISS) next year, he will have two new skincare items in his bag that are especially designed for the rigors of space travel.